/lib # insmod ./modules/2.4.20/kernel/net/ipv4/netfilter/ip_nat_sip.o
Using ./modules/2.4.20/kernel/net/ipv4/netfilter/ip_nat_sip.o
insmod: unresolved symbol ip_conntrack_expect_find_get
/lib # uname -a
Linux  2.4.20 #177 Wed Feb 23 18:26:26 CET 2005 mips unknown
/lib # cat /etc/