On Wed, 4 Jan 2012, Hans Schillstrom wrote: > On Wednesday 04 January 2012 09:28:05 Jozsef Kadlecsik wrote: > > > > On Wed, 4 Jan 2012, Hans Schillstrom wrote: > > > > > In some cases it not desirable to have auto defrag. > > > Ex. in a cluster where packets can arrive on different blades. > > > In that case it is possible to use containers (LXC) and send > > > all fragments to one place where defrag is enabled. > > > > > > This patch makes it possible to turn off the defrag per network name space, > > > by setting net.netfilter.nf_conntrack_nodefrag to 1. > > > Both IPv4 and IPv6 is effected by this sysctl. > > > Default is 0 which is defrag. > > > > Conntrack assumes that the packets are defragmented and will drop any > > unfragmented one. So your patch results packet drops. > > Hmmm, more work... > > > > Also, if you want to disable defragmentation then why don't you simply > > "mark" the packets with the NOTRACK target? > > I don't think that will work since NF_IP_PRI_CONNTRACK_DEFRAG is -400 Then change NF_IP_PRI_RAW so that it precedes NF_IP_PRI_CONNTRACK_DEFRAG. The raw table should be made possible to completely override conntack and defrag is implicit part of the latter. Best regards, Jozsef - E-mail : kadlec@xxxxxxxxxxxxxxxxx, kadlecsik.jozsef@xxxxxxxxxxxxx PGP key : http://www.kfki.hu/~kadlec/pgp_public_key.txt Address : Wigner Research Centre for Physics, Hungarian Academy of Sciences H-1525 Budapest 114, POB. 49, Hungary -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
