libs/sys: workaround broken entries in /proc/net/ipv6_route, observed on brcm-2.4
libs/sys: workaround broken entries in /proc/net/ipv6_route, observed on brcm-2.4

git-svn-id: f7818b41aa164576329f806d7c3827e8a55298bb@8886 ab181a69-ba2e-0410-a84d-ff88ab4c47bc

fqrouter/luci,fqrouter/luci,fqrouter/luci,fqrouter/luci,fqrouter/luci,fqrouter/luci,fqrouter/luci,fqrouter/luci