mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-26 00:41:17 +00:00
50 lines
1.7 KiB
Diff
50 lines
1.7 KiB
Diff
--- a/src/dhcp.c
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+++ b/src/dhcp.c
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@@ -134,7 +134,7 @@ void dhcp_packet(time_t now, int pxe_fd)
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struct iovec iov;
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ssize_t sz;
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int iface_index = 0, unicast_dest = 0, is_inform = 0;
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- struct in_addr iface_addr;
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+ struct in_addr iface_addr, *addrp = NULL;
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struct iface_param parm;
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#ifdef HAVE_LINUX_NETWORK
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struct arpreq arp_req;
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@@ -246,11 +246,9 @@ void dhcp_packet(time_t now, int pxe_fd)
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ifr.ifr_addr.sa_family = AF_INET;
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if (ioctl(daemon->dhcpfd, SIOCGIFADDR, &ifr) != -1 )
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- iface_addr = ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr;
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- else
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{
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- my_syslog(MS_DHCP | LOG_WARNING, _("DHCP packet received on %s which has no address"), ifr.ifr_name);
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- return;
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+ addrp = &iface_addr;
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+ iface_addr = ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr;
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}
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for (tmp = daemon->dhcp_except; tmp; tmp = tmp->next)
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@@ -272,7 +270,7 @@ void dhcp_packet(time_t now, int pxe_fd)
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parm.current = NULL;
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parm.ind = iface_index;
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- if (!iface_check(AF_INET, (struct all_addr *)&iface_addr, ifr.ifr_name))
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+ if (!iface_check(AF_INET, (struct all_addr *)addrp, ifr.ifr_name))
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{
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/* If we failed to match the primary address of the interface, see if we've got a --listen-address
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for a secondary */
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@@ -291,7 +289,13 @@ void dhcp_packet(time_t now, int pxe_fd)
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there is more than one address on the interface in the same subnet */
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complete_context(match.addr, iface_index, match.netmask, match.broadcast, &parm);
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}
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-
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+
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+ if (!addrp)
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+ {
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+ my_syslog(MS_DHCP | LOG_WARNING, _("DHCP packet received on %s which has no address"), ifr.ifr_name);
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+ return;
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+ }
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+
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if (!iface_enumerate(AF_INET, &parm, complete_context))
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return;
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