Jan 4 01:43:09 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:10 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:10 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:11 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:14 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:15 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:15 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:17 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:17 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:17 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:18 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:19 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:20 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:20 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:20 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:20 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:22 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:27 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:28 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:29 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:36 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:37 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:37 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:37 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:38 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 01:43:38 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum   
Jan 4 02:04:46 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:04:47 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:04:47 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:04:48 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:04:50 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:04:50 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:04:51 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:04:52 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:04:52 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:04:53 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:04:53 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:04:54 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:04:54 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:04:55 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:04:55 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:04:56 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:04:56 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:04:57 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:04:57 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:04:58 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:04:59 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:00 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:00 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:00 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:01 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:02 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:03 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:03 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:04 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:04 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:05 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:06 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:06 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:07 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:08 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:08 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:09 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:10 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:10 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:11 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:12 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:13 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:14 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:14 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 
Jan 4 02:05:15 user notice kernel: net/ipv4/netfilter/ip_conntrack_pptp.c: bad csum 

user err kernel: ipt_tcpmss_target: bad length (40 bytes)