Some modems expose multiple network interfaces on the same USB device,
causing the connection setup script to fail, because glob matching in
the detection phase causes 'ls' to output more than one interface name
plus their base directories in sysfs. Avoid that by listing the
directories explicitly and then selecting first available interface.
This is the case for some variants of ZTE MF286R built-in modem, which
exposes both RNDIS and CDC-ECM network interfaces, causing the
connection setup to fail.
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
(cherry picked from commit b2940bb8b2)
Add ifname property to UCI, which can be used to override the
autodetected interface name in case the detection fails due to having
none or more than one interface exposed by the modem, which is not
explicitly linked to TTY port. This is needed on certain variants of ZTE
MF286R built-in modem, which exposes both RNDIS and CDC-ECM interfaces
on the modem, on which the automatic detection may select the wrong
network interface.
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
(cherry picked from commit a67629bbe2)
Notify external ubus subscribers of received link-measurement reports.
Signed-off-by: David Bauer <mail@david-bauer.net>
(cherry picked from commit f6445cfa1a)
Add a ubus method to request link-measurements from connected STAs.
In addition to the STAs address, the used and maximum transmit power can
be provided by the external process for the link-measurement. If they
are not provided, 0 is used as the default value.
Signed-off-by: David Bauer <mail@david-bauer.net>
(cherry picked from commit 965aa33a18)
Allow external processes to enable advertisement of link-measurement RRM
capability.
Signed-off-by: David Bauer <mail@david-bauer.net>
(cherry picked from commit 2ca5c3da04)
Checking whether /sbin/udhcpc is a symbolic link breaks using the
DHCP proto handler inside procd-ujail where bind-mounts are used for
the resolved link. Check whether /sbin/udhcpc is executable instead
to allow using the proto handler for DHCP-provisioned containers.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit c5f113c43f)
Problem exist when dnsmasq is exclusively bind to particular interface.
After reconfiguring or restarting this interface, its index changes, but
dnsmasq uses the old one. When this problem occurs, dnsmasq does not
listen on the correct interface so DHCP does not work, and clients do not
get an IP address. Procd netdev param can be added to restart dnsmasq when
the interface index is changed.
Signed-off-by: Valentyn Datsko <valikk.d@gmail.com>
[combined into a single &&-connected statement]
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 76f55e3c3f)
Evaluating the return value of 'json_load' didn't work in the
intended way resulting in PIN status no longer being read on modems
where --get-pin-status doesn't fail.
Fix this by trying --get-pin-status first and checking if pin1_status
field exists in JSON, and if it doesn't try again with
--uim-get-sim-state.
Fixes: #9501
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit ee7cb5e885)
391a9fbd5ace dns: fix parsing vlan encapsulated protocol
6aeeddbc91ad interface: extend dns filters to cover vlan tagged traffic as well
1ab53d4ca601 bpf: return TC_ACT_UNSPEC to allow other filters to proceed
ca21e729af23 interface: switch to using clsact for filters
5d158f6b3c15 interface: run ingress bpf filter on main device ingress instead of ifb egress
bdfcb11847ce interface: fix duplicated dns filter line
b97405aa632a Revert "ubus: remove dnsmasq subscriber"
8fbaf39dbc95 interface: rework adding/removing filters, do not delete clsact
d7ba5804eae4 interface: replace open-coded ifb-dns string with QOSIFY_DNS_IFNAME
91cf440db9e2 loader: fix use of deprecated functions
57c7817f91c2 qosify: fix dscp values of ubus-added dns host entries
Signed-off-by: Felix Fietkau <nbd@nbd.name>
(cherry-picked from commit af434e0da2)
Add a patch to add some missing init_extensions{a,b}() calls
Package lib{arp,eb}t_*.so
Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>
This allows to install ip6tables-nft without iptables-nft
This prepare the addition of {arp,eb}tables-nft
Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>
This prepare the introduction of ebtables-nft.
Add PROVIDES so dependencies are not broken,
use ALTERNATIVES.
Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>
This prepare the introduction of arptables-nft.
Add PROVIDES so dependencies are not broken,
use ALTERNATIVES.
Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>
drop the use of LIB_SUFFIX
Fixes: 00cbf6f6ab ("bpftools: update to standalone bpftools + libbpf, use the latest version")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
When porting mwan3 from iptables to nftables I tried the new translation
tool for ipset ipset-translate. I noticed that no IPv6 ipset can be
created with the tool. I have reported the problem to the upstream
project and the following patch fixes the problem.
Until this upsream is included in a new release, this patch should be
used in Openwrt.
https://lore.kernel.org/netfilter-devel/20220228190217.2256371-1-pablo@netfilter.org/T/#m09cc3cb738f2e42024c7aecf5b7240d9f6bbc19c
Signed-off-by: Florian Eckert <fe@dev.tdt.de>
Modems used in ZTE mobile broadband routers require to query the data
session status using the same CID as one used to establish the session,
otherwise they will report the session as "disconnected" despite
reporting correct PDH in previous step. Without this change, IPv6
connection on these modems doesn't establish properly. In IPv4 this bug
is present as well, but for some reason querying of IPv4 status works
using temporary CID, this however seems noncompliant with QMI
specifications, so fix it as well.
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
Previously libxt_socket.so was included in iptables-mod-tproxy. It was
missed out when trying to make kmod-ipt-socket and kmod-ipt-tproxy
separate packages
Fixes: 4f443c88 ("netfilter: separate packages for kmod-ipt-socket and kmod-ipt-tproxy")
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
3276aed81c73 move run_cmd() to main.c
558eabc13c64 map: move dns host based lookup code to a separate function
6ff06d66c36c dns: add code for snooping dns packets
a78bd43c4a54 ubus: remove dnsmasq subscriber
9773ffa70f1f map: process dns patterns in the order in which they were defined
f13b67c9a786 dns: allow limiting dns entry matching to cname name
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This adds the new tc-bpf variant and removes libxtables dependency from
the tc-tiny variant. The tc-full variant stays like before and contains
everything.
This allows to use tc without libxtables.
The variants have the following sizes:
root@OpenWrt:/# ls -al /usr/libexec/tc-*
-rwxr-xr-x 1 root root 282453 Mar 1 21:55 /usr/libexec/tc-bpf
-rwxr-xr-x 1 root root 282533 Mar 1 21:55 /usr/libexec/tc-full
-rwxr-xr-x 1 root root 266037 Mar 1 21:55 /usr/libexec/tc-tiny
They are linking the following shared libraries:
root@OpenWrt:/# ldd /usr/libexec/tc-tiny
/lib/ld-musl-mips-sf.so.1 (0x77d6e000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x77d4a000)
libc.so => /lib/ld-musl-mips-sf.so.1 (0x77d6e000)
root@OpenWrt:/# ldd /usr/libexec/tc-bpf
/lib/ld-musl-mips-sf.so.1 (0x77da6000)
libbpf.so.0 => /usr/lib/libbpf.so.0 (0x77d60000)
libelf.so.1 => /usr/lib/libelf.so.1 (0x77d3e000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x77d1a000)
libc.so => /lib/ld-musl-mips-sf.so.1 (0x77da6000)
libz.so.1 => /usr/lib/libz.so.1 (0x77cf6000)
root@OpenWrt:/# ldd /usr/libexec/tc-full
/lib/ld-musl-mips-sf.so.1 (0x77de8000)
libbpf.so.0 => /usr/lib/libbpf.so.0 (0x77da2000)
libelf.so.1 => /usr/lib/libelf.so.1 (0x77d80000)
libxtables.so.12 => /usr/lib/libxtables.so.12 (0x77d66000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x77d42000)
libc.so => /lib/ld-musl-mips-sf.so.1 (0x77de8000)
libz.so.1 => /usr/lib/libz.so.1 (0x77d1e000)
This is based on a patch from Tiago Gaspar.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Without PKG_RELEASE, it's impossible to trigger package updates when
changing files included in the package that are not in the qosify git
repository.
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
Acked-by: Felix Fietkau <nbd@nbd.name>
Update to the latest upstream version. In this version there is a new
tool with which you can convert ipsets into nftables sets. Since we are
now using nftables as default firewall, this could be a useful tool for
porting ipsets to nftables sets.
Signed-off-by: Florian Eckert <fe@dev.tdt.de>
iptables-nft doesn't depend on libip{4,6}tc, so move
libiptext* libs in their own packages to clean up dependencies
Rename libxtables-nft to libiptext-nft
Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>
Using PROVIDES allows to have other packages continue to
depend on iptables and users to pick between legacy and nft
version.
Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>
'iptables-mod-' can be used directly by firewall3, by
iptables and by iptables-nft. They are not linked to
iptables but to libxtables, so fix the dependencies to allow
to remove iptables(-legacy)
Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>
libxtables doesn't depend on libnftnl, iptables-nft does,
so move the dependency to not pull libnftnl with firewall3/iptables-legacy
Also libxtables-nft depends on IPTABLES_NFTABLES
Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>
Enable both the hunting-and-pecking loop and hash-to-element mechanisms
by default in OpenWRT with SAE.
Commercial Wi-Fi solutions increasingly frequently now ship with both
hunting-and-pecking and hash-to-element (H2E) enabled by default as this
is more secure and more performant than offering hunting-and-pecking
alone for H2E capable clients.
The hunting and pecking loop mechanism is inherently fragile and prone to
timing-based side channels in its design and is more computationally
intensive to perform. Hash-to-element (H2E) is its long-term
replacement to address these concerns.
For clients that only support the hunting-and-pecking loop mechanism,
this is still available to use by default.
For clients that in addition support, or were to require, the
hash-to-element (H2E) mechanism, this is then available for use.
Signed-off-by: Nick Lowe <nick.lowe@gmail.com>
Contains following changes:
136006b88826 cmake: fix usage of implicit library and include paths
bc0e84d689e2 netifd: interface-ip: don't set fib6 policies if ipv6 disabled
Signed-off-by: Petr Štetiar <ynezz@true.cz>
The 80211r r0kh and r1kh defaults are generated from the md5sum of
"$mobility_domain/$auth_secret". auth_secret is only set when using EAP
authentication, but the default key is used for SAE/PSK as well. In
this case, auth_secret is empty, and the default value of the key can
be computed from the SSID alone.
Fallback to using $key when auth_secret is empty. While at it, rename
the variable holding the generated key from 'key' to 'ft_key', to avoid
clobbering the PSK.
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
[make ft_key local]
Signed-off-by: David Bauer <mail@david-bauer.net>
Add the STAs extended capabilities to the ubus STA information. This
way, external daemons can be made aware of a STAs capabilities.
This field is of an array type and contains 0 or more bytes of a STAs
advertised extended capabilities.
Signed-off-by: David Bauer <mail@david-bauer.net>
This fixes the following security problem:
The command-line argument parser in tcpdump before 4.99.0 has a buffer
overflow in tcpdump.c:read_infile(). To trigger this vulnerability the
attacker needs to create a 4GB file on the local filesystem and to
specify the file name as the value of the -F command-line argument of
tcpdump.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
53caa1a fw4: resolve zone layer 2 devices for hw flow offloading
9fe58f5 fw4: rework and fix family inheritance logic
8795296 tests: mocklib: fix infinite recursion in wrapped print()
281b1bc tests: change mocked wan interface type to PPPoE
93b710d tests: mocklib: forward compatibility change
1a94915 fw4: only stage reflection rules if all required addrs are known
5c21714 fw4: add device iifname/oifname matches to DSCP and MARK rules
3eacc97 tests: adjust 01_ruleset test case to latest changes
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
When the uci configuration is created automatically during a very early
stage, where no entropy daemon is set up, generating the key directly is
not an option. Therefore we allow to set the private_key to "generate"
and generate the private key directly before the interface is taken up.
Signed-off-by: Leonardo Mörlein <me@irrelefant.net>
Tested-by: Jan-Niklas Burfeind <git@aiyionpri.me>
Now that we can have both legacy and nft iptables variants
installed at the same time, install the legacy symlinks
Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>
As nftables is now the default, ip(6)tables-nft gets higher priority
The removed symlinks ("$(CP)" line) will now be installed by the
ALTERNATIVES mechanism
Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>
according to iptables-nft man page,
"These tools use the libxtables framework extensions and hook to the nf_tables
kernel subsystem using the nft_compat module."
This means that to work, iptables-nft needs the same modules as
iptables legacy except the ip(6)table-{filter,mangle,nat,raw}
ip_tables, ip6tables.
When those modules are loaded iptables-nft-save output contains
"# Warning: iptables-legacy tables present, use iptables-legacy-save to see them"
But as long as it's empty it should not be a problem.
To have nft properly display the rules created by ip(6)tables-nft we need
all iptables targets and matches to be built as extension and not built-in
(/usr/lib/iptables/libip(6)t_*.so)
When switching a package to iptables-nft, you need to keep the
iptables-mod-* dependencies
This patch does minimal changes:
- remove the direct iptables-nft -> iptables dependency
- and more important add nft-compat dependency
The rule
iptables-nft -A OUTPUT -d 8.8.8.8 -m comment --comment "aaa" -j REJECT
becomes
table ip filter {
chain OUTPUT {
type filter hook output priority filter; policy accept;
ip daddr 8.8.8.8 # xt_comment counter packets 0 bytes 0 # xt_REJECT
}
}
Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>
795f420 cmis: Rename CMIS parsing functions
369b43a cmis: Initialize CMIS memory map
da16288 cmis: Use memory map during parsing
6acaeb9 cmis: Consolidate code between IOCTL and netlink paths
d7d15f7 sff-8636: Rename SFF-8636 parsing functions
4230597 sff-8636: Initialize SFF-8636 memory map
b74c040 sff-8636: Use memory map during parsing
799572f sff-8636: Consolidate code between IOCTL and netlink paths
9fdf45c sff-8079: Split SFF-8079 parsing function
2ccda25 netlink: eeprom: Export a function to request an EEPROM page
86792db cmis: Request specific pages for parsing in netlink path
6e2b32a sff-8636: Request specific pages for parsing in netlink path
c2170d4 sff-8079: Request specific pages for parsing in netlink path
9538f38 netlink: eeprom: Defer page requests to individual parsers
664586e Merge branch 'review/next/module-mem-map' into master
50fdaec ethtool: Set mask correctly for dumping advertised FEC modes
c5e7133 cable-test: Fix premature process termination
73091cd sff-8636: Use an SFF-8636 specific define for maximum number of channels
837c166 sff-common: Move OFFSET_TO_U16_PTR() to common header file
8658852 cmis: Initialize Page 02h in memory map
27b42a9 cmis: Initialize Banked Page 11h in memory map
340d88e cmis: Parse and print diagnostic information
eae6a99 cmis: Print Module State and Fault Cause
82012f2 cmis: Print Module-Level Controls
d7b1007 sff-8636: Print Power set and Power override bits
429f2fc Merge branch 'review/cmis-diag' into master
32457a9 monitor: do not show duplicate options in help text
c01963e Release version 5.16.
The sizes of the ipk changed on MIPS 24Kc like this:
34317 ethtool_5.15-1_mips_24kc.ipk
34311 ethtool_5.16-1_mips_24kc.ipk
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Add the nohostroute option as available for gre and wg tunnels to
allow the user to prevent explicit creation of a route to the peer
address.
Signed-off-by: Matthew Hagan <mnhagan88@gmail.com>
OpenWrt plans to move over to firewall4 which uses nftables under the
hood. To allow a smooth migration the package `iptables-nft` offer a
transparent wrapper to apply iptables rules to nftables.
Without the config option for nftables the package isn't installed and
therefore can't be tested. This commit enabled it and therefore provides
the wrapper.
The size of the iptables package increases from 25436 to 26500 Bytes.
Signed-off-by: Paul Spooren <mail@aparcar.org>
0f16ea5 options.c: add DSCP code LE Least Effort
24ba465 firewall3: remove redundant syn check
df1306a firewall3: fix locking issue
3624c37 firewall3: support table load on access on Linux 5.15+
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
9a509d4 ruleset.uc: consolidate ip and ip6 offload
21f311d ruleset.uc: don't trim newline before comment sign
f121383 tests: enable flow offloading in tests
550df40 tests: add test for unknown defaults option
47c5a5b tests: add test for deprecated rule option
69a89d6 tests: add test for unknown rule option
07579df fw4.uc: handle interface zone option
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
Provide uci-firewall via PROVIDES in both firewall and firewall4. This
will allow us to change the dependency of luci-app-firewall to
uci-firewall, making it possible to use it with either implementation.
Move CONFLICTS from firewall4 to firewall, to solve this recursive
dependency problem:
tmp/.config-package.in:307:error: recursive dependency detected!
tmp/.config-package.in:307: symbol PACKAGE_firewall is selected by PACKAGE_firewall4
tmp/.config-package.in:328: symbol PACKAGE_firewall4 depends on PACKAGE_firewall
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
Reviewed-by: Jo-Philipp Wich <jo@mein.io>
4ead2a6 treewide: move executables to /sbin
9ebc2f4 fw4.uc: filter duplicates in fw4.set
85b74f3 treewide: support flow offloading
be3b4e6 treewide: support hardware flow offloading
38889b7 treewide: support set timeout
31c7550 fw4.uc: do not skip defaults with invalid option
334a127 fw4.uc: introduce DEPRECATED flag
7a0d38f fw4.uc: add _name as deprecated option
5e7ad3b fw4.uc: don't fail on unknown options
be5f4e3 fw4.uc: allow use of cidr in ipsets
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
Reviewed-by: Jo-Philipp Wich <jo@mein.io>
The limitation of not being able to use iptables and nft nat at the same
time exists only in kernels before 4.18.
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
Reviewed-by: Jo-Philipp Wich <jo@mein.io>
Recently the hostapd has undergone many changes. The patches were not refreshed.
Refreshed with
make package/hostapd/{clean,refresh}
Refreshed:
- 380-disable_ctrl_iface_mib.patch
- 600-ubus_support.patch
- 700-wifi-reload.patch
- 720-iface_max_num_sta.patch
Signed-off-by: Nick Hainke <vincent@systemli.org>
This is required to be able to use flow offloading on devices with
ifnames that start with a digit, like 6in4-wan6.
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
The build of the manpages needs the pandoc tool, this is not in the
minimal requirements of OpenWrt, just remove the build of the restool
manpage. This fixes the build on systems without pandoc like the OpenWrt build bots.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Up to now the WPS script triggered WPS on the stations only if it
could not trigger it successfully on any hostapd instance.
In a Multi-AP context, there can be a need (to establish a new
wireless backhaul link) to trigger WPS on the stations, regardless of
whether there is already a hostapd instance configured or not. The
current script makes it impossible, as if hostapd is running and
configured, WPS would always be triggered on hostapd only.
To allow both possibilities, the following changes are made:
- Change the "pressed" action to "release", so that we can make use of
the "$SEEN" variables (to know for how long the button was pressed).
- If the button is pressed for less than 3 seconds, keep the original
behavior.
- If the button is pressed for 3 seconds or more, trigger WPS on the
stations, regardless of the status of any running hostapd instance.
- Add comments explaining both behaviors.
- While at it, replace the usage of '-a' with a '[] && []'
construct (see [1]).
This gives users a "fallback" mechanism to onboard a device to a
Multi-AP network, even if the device already has a configured hostapd
instance running.
[1]: https://github.com/koalaman/shellcheck/wiki/SC2166
Signed-off-by: Raphaël Mélotte <raphael.melotte@mind.be>
Otherwise, connection setup may fail due to JSON parse error in netifd.
Signed-off-by: Martin Schiller <ms@dev.tdt.de>
[Updated commit description]
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
PIN2 is used only to restrict changing of fixed dialling feature,
does not affect network registration. Therefore explicitly check for
PIN1 state during connection setup, which is required for network
registration.
Signed-off-by: Martin Schiller <ms@dev.tdt.de>
[Updated commit description]
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
This is needed to properly close the control channel.
Otherwise, on the next try the caps call may fail.
Signed-off-by: Martin Schiller <ms@dev.tdt.de>
The http://www.us.tcpdump.org mirror will go offline soon, only use the
normal download URL.
Reported-by: Denis Ovsienko <denis@ovsienko.info>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
The auto-ht option already kept HT and VHT support, but wasn't updated
to support HE (11ax).
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Provide incoming BSS transition queries to ubus subscribers.
This allows external steering daemons to provide clients with
an optimal list of transition candidates.
This commit has no functional state in case no ubus subscriber is
present or it does not handle this ubus message.
To prevent hostapd from sending out a generic response by itself, a
subscribing daemon has to return a non-zero response code to hostapd.
Signed-off-by: David Bauer <mail@david-bauer.net>
Backport a patch to allow extending the ubus BSS-transition method
for specifying individual dialog tokens for BSS transition
management requests.
This is required for handling BSS transition queries in the future.
Signed-off-by: David Bauer <mail@david-bauer.net>
39b584b Revert "dhcpv6: add a minimum valid lifetime for IA_PD updates"
c9578e1 dhcpv6: add support for null IA_PD valid lifetime
ca43ea3 dhcpv6: add a minimum valid lifetime for IA_PD updates
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
5ca5e0b netifd: allow disabling rule/rule6 config sections
8875960 interface-ip: add support for IPv6 prefix invalidation
e589c05 interface-ip: use metric when looking for a route
b54ffde main: fix hotplug script usage message
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
This adds a new struct for storing statistics not (yet) tracked by
hostapd regarding RRM and WNM activity.
These statistics can be read using the get_status hostapd interface ubus
method.
Signed-off-by: David Bauer <mail@david-bauer.net>
Revert a commit to allow providing CFLAGS and LIBS from OpenWrt package
Makefile.
This downgrades the nl80211.h to kernel 5.15 and removes FILS_CRYPTO_OFFLOAD.
This is needed to make it compatible with our patched mac80211 from
kernel 5.15
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
The 'fils_dhcp' option can be set to '*' in order to autodetect the DHCP server
For proto=dhcp networks, the discovered dhcp server will be used
For all other networks, udhcpc is called to discover the address
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Among other things, this can be used to auto-configure the DHCP server
address for wireless APs using FILS, if the bridged interface is
configured to DHCP
Signed-off-by: Felix Fietkau <nbd@nbd.name>
