Remove outdated checking of IPv6 support from configure.ac

ipset can be compiled without IPv6 support since 6.0, however
the outdated checking in configure.ac made it not possible.
(reported by Denys Fedoryshchenko)

diff --git a/configure.ac b/configure.ac
index 3ccef61aadd5a8bc9a8561abd14b72030391f2dc..6849ff5614736cd98b76fa9f1f959cc9139d99e9 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -51,11 +51,6 @@ fi
 
 AC_PROG_GREP
 
-if test "X`$GREP '^CONFIG_IP6_NF_IPTABLES=' $kbuilddir/.config`" = "X"
-then
-       AC_MSG_ERROR([The kernel build directory $kbuilddir is not configured with IP6_NF_IPTABLES support (ip6tables)])
-fi
-
 if test "X`$GREP 'NFNL_SUBSYS_IPSET' $ksourcedir/include/linux/netfilter/nfnetlink.h`" = "X"
 then
        AC_MSG_ERROR([The kernel source directory $ksourcedir is not patched with netlink.patch to support ipset])