From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030830
Debian/1.4-3.he-1

Description of problem:
with:

glibc-2.3.2-77
glibc-kernheaders-2.4-8.31

Don't know how to properly fix it.

gcc   ip.o ipaddress.o iproute.o iprule.o rtm_map.o iptunnel.o ipneigh.o
iplink.o ipmaddr.o ipmonitor.o ipmroute.o ../lib/libnetlink.a ../lib/libutil.a 
-lresolv -L../lib -lnetlink -lutil -o ip
iptunnel.o(.text+0x656): In function `parse_args':
/local/src/redhat/BUILD/iproute2/ip/iptunnel.c:208: undefined reference to
`__constant_htons'
iptunnel.o(.text+0x674):/local/src/redhat/BUILD/iproute2/ip/iptunnel.c:209:
undefined reference to `__constant_htons'
iptunnel.o(.text+0x759):/local/src/redhat/BUILD/iproute2/ip/iptunnel.c:222:
undefined reference to `__constant_htons'
iptunnel.o(.text+0x82c):/local/src/redhat/BUILD/iproute2/ip/iptunnel.c:235:
undefined reference to `__constant_htons'
iptunnel.o(.text+0x8e7):/local/src/redhat/BUILD/iproute2/ip/iptunnel.c:246:
undefined reference to `__constant_htons'
iptunnel.o(.text+0x905):/local/src/redhat/BUILD/iproute2/ip/iptunnel.c:247: more
undefined references to `__constant_htons' follow
collect2: ld returned 1 exit status
make[1]: *** [ip] Error 1


Version-Release number of selected component (if applicable):
iproute-2.4.7-10

How reproducible:
Always

Steps to Reproduce:
1. try to compile again latest updates
    

Actual Results:  does not compile


Additional info: