Accept DHCP responses from WAN by default.
commitfa41424345ce1f1ecaad2309a625d9c6b9749a75
authorFedor <fedork@ubuntu.(none)>
Thu, 24 Jun 2010 05:59:22 +0000 (24 01:59 -0400)
committerFedor <fedork@ubuntu.(none)>
Sun, 27 Jun 2010 05:26:28 +0000 (27 01:26 -0400)
treed6a10192ba2b8b4e0d263aa4c85b01bf53e9161d
parent1299b6fb2a633da6dabb01251140da8ae9058b28
Accept DHCP responses from WAN by default.
With some broken ISPs, the dhcp server reply to RENEW may come from an
unexpected source and get blocked by the firewall. Accept DHCP responses
from any source (OpenWRT does the same) by default, but allow to disable
this via nvram variable.

Ref:
http://www.dd-wrt.com/wiki/index.php/Iptables_command#Firewall_blocks_DHCP_renewal_responses
https://dev.openwrt.org/browser/trunk/package/firewall/files/firewall.config
https://dev.openwrt.org/ticket/4108
release/src/router/httpd/tomato.c
release/src/router/nvram/defaults.c
release/src/router/rc/firewall.c