Package: netcfg Version: 1.160 Severity: normal When doing static IP configuration, netcfg will reject a gateway address outside the host's network as defined by the netmask. This is wrong for IPv6 because the gateway can legitimately be a link-local address in fe80::/64 instead of the host's network range. Ubuntu have fixed this bug in their version, see LP#1382295 https://bugs.launchpad.net/ubuntu/+source/netcfg/+bug/1382295
The relevant function is netcfg_gateway_reachable in netcfg-common.c which simply checks gateway_address & netmask == host_address. It should also allow IPv6 addresses in the link local prefix fe80::/64. Less importantly, the error message it triggers could be a bit clearer, "The gateway address you entered is unreachable" sounds like it might be a network error when it's purely a user-input parsing rejection - if the code had actually tried the link-local address it would've worked. Thanks for your help, Andrew Kanaber
