Hi,
You can see from the output where the errors are happening, in the network
IP code it seems. (net/network.o)
> net/network.o: In function `ip_nat_fn':
> net/network.o(.text+0x2c62a): undefined reference to `ip_conntrack_get'
> net/network.o: In function `ip_nat_out':
> net/network.o(.text+0x2c7aa): undefined reference to `ip_ct_gather_frags'
> net/network.o: In function `init_or_cleanup':
What I usually do is try to narrow down the offending module by disabling
any non-critical functions (ie. masqerading, tunneling, etc).. try to
give it another recompile and see what breaks. If you actually find a bug
in the kernel, most likely some obscure hardware... post it to kernel-dev
mailing list.
Cheers & good luck
.mark