there is a patch in iptables-1.2.9 for layer7 addon, but the ebuild doesn't
chmod +x extensions/.IMQ-test*
chmod +x extensions/.childlevel-test*
chmod +x extensions/.layer7-test*
so at compilation time, the addon is not compiled.
The iptables-1.2.9-r1 ebuild doesn't suffer from this bug
Steps to Reproduce:
The way patches are added to iptables earlier versions gets patches with patches added to newer revisions.
layer7 support was added to -r1 and is currently in a masked testing phase.