make failure

[W. H. Carlisle]

gcc  -g -O2 -Wall   -o zebra  zserv.o main.o interface.o connected.o 
ioctl.o rib.o redistribute.o debug.o rtadv.o zebra_snmp.o 
../lib/libzebra.a ipforward_proc.o if_ioctl.o if_proc.o rt_ioctl.o 
rtread_proc.o    -lm -lcrypt
zserv.o: In function `show_ipv6_forwarding':
/root/zebra-0.93a/zebra/zserv.c:1699: undefined reference to 
`ipforward_ipv6'
zserv.o: In function `no_ipv6_forwarding':
/root/zebra-0.93a/zebra/zserv.c:1728: undefined reference to 
`ipforward_ipv6_off'
zserv.o: In function `config_write_forwarding':
/root/zebra-0.93a/zebra/zserv.c:1747: undefined reference to 
`ipforward_ipv6'
zserv.o: In function `zebra_init':
/root/zebra-0.93a/zebra/zserv.c:1773: undefined reference to 
`ipforward_ipv6_on'
rib.o: In function `rib_install_kernel':
/root/zebra-0.93a/zebra/rib.c:669: undefined reference to 
`kernel_add_ipv6'
rib.o: In function `rib_uninstall_kernel':
/root/zebra-0.93a/zebra/rib.c:695: undefined reference to 
`kernel_delete_ipv6'
rib.o: In function `rib_bogus_ipv6':
/root/zebra-0.93a/zebra/rib.c:2002: undefined reference to 
`kernel_delete_ipv6_old'
collect2: ld returned 1 exit status
make[2]: *** [zebra] Error 1
make[2]: Leaving directory `/root/zebra-0.93a/zebra'
make[1]: *** [all-recursive] Error 1

address@hidden zebra-0.93a]# cat /proc/version
Linux version 2.4.18-14 (address@hidden) (gcc 
version 3.2 20020903 (Red Hat Linux 8.0 3.2-7)) #1 Wed Sep 4 13:35:50 
EDT 2002

I am going for an ipv6 router.  I first installed the redhat rpm, but 
have come to the conclusion that the package was compiled w/o support 
for ipv6 so am looking to rebuild zebra.  Any help appreciated.

Thanks.