[nf-next:for-net-next3 35/40] utils.c:undefined reference to `nf_ip6_checksum_partial'

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next.git 
for-net-next3
head:   dfbb1c16489ca1b93e3f8aebc74d9229f1d87cc6
commit: 1033afac404a403b3ae982702061e7808b80e597 [35/40] netfilter: remove 
checksum_partial indirection in struct nf_afinfo
config: i386-allmodconfig (attached as .config)
compiler: gcc-7 (Debian 7.2.0-12) 7.2.1 20171025
reproduce:
        git checkout 1033afac404a403b3ae982702061e7808b80e597
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   net/netfilter/utils.o: In function `nf_checksum':
   utils.c:(.text+0x35): undefined reference to `nf_ip6_checksum'
   net/netfilter/utils.o: In function `nf_checksum_partial':
>> utils.c:(.text+0x88): undefined reference to `nf_ip6_checksum_partial'

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.config.gz
Description: application/gzip