ip_vs_check_diff16
csum_fold(ip_vs_check_diff16(oldip->ip6, newip->ip6,
~csum_fold(ip_vs_check_diff16(oldip->ip6, newip->ip6,
csum_fold(ip_vs_check_diff16(oldip->ip6, newip->ip6,
~csum_fold(ip_vs_check_diff16(oldip->ip6, newip->ip6,