Re: Network stack unstable after arp flapping

2011-04-04 Thread Steve Polyack
On 4/3/2011 9:50 AM, Frederique Rijsdijk wrote: Steve, On 01-04-11 16:50, Steve Polyack wrote: On 04/01/11 10:16, Frederique Rijsdijk wrote: [ .. ] Mar 31 18:36:12 srv01 kernel: arp: x.x.x.1 moved from 00:00:0c:9f:f0:3d to 00:00:0c:07:ac:3d on bge0 [ .. ] The result of that, is that loads o

Re: Network stack unstable after arp flapping

2011-04-04 Thread K. Macy
On Mon, Apr 4, 2011 at 12:22 PM, Frederique Rijsdijk wrote: > Hi Kip, > > Thanks. Any idea btw why this would also effect hosts that run 6.x and 7.x > RELEASE versions? These do not have the flowtable sysctl. Uhm ... no. That would definitely be unrelated. I'm just taking their word for it. And

Re: Network stack unstable after arp flapping

2011-04-04 Thread Frederique Rijsdijk
Hi Kip, Thanks. Any idea btw why this would also effect hosts that run 6.x and 7.x RELEASE versions? These do not have the flowtable sysctl. -- Frederique On Mon, Apr 04, 2011 at 12:09:05PM +0200, K. Macy wrote: > Correct. Set it to zero and the flowtable will be bypassed. > > flowtable.c:

Re: Network stack unstable after arp flapping

2011-04-04 Thread K. Macy
Correct. Set it to zero and the flowtable will be bypassed. flowtable.c: static uint32_t ipv6_flow_lookup_hash_internal( struct sockaddr_in6 *ssin6, struct sockaddr_in6 *dsin6, uint32_t *key, uint16_t flags) { uint16_t sport, dport; uint8_t proto; int of

Re: Network stack unstable after arp flapping

2011-04-04 Thread Frederique Rijsdijk
Kip, Which sysctl are we talking about exactly? Just to be sure.. net.inet.flowtable.enable ? -- Frederique On Sun, Apr 03, 2011 at 08:11:33PM +0200, K. Macy wrote: > I don't think it was properly tested when it was enabled for IPv6. > Given that I have been absentee it really should not be

Re: Network stack unstable after arp flapping

2011-04-03 Thread K. Macy
I don't think it was properly tested when it was enabled for IPv6. Given that I have been absentee it really should not be in the default kernel or at least the sysctl should be off. Sorry for the inconvenience. Additionally, you don't need to rebuild you can just disable the sysctl. -Kip On Sun

Re: Network stack unstable after arp flapping

2011-04-03 Thread Frederique Rijsdijk
Steve, On 01-04-11 16:50, Steve Polyack wrote: > On 04/01/11 10:16, Frederique Rijsdijk wrote: [ .. ] >> Mar 31 18:36:12 srv01 kernel: arp: x.x.x.1 moved from >> 00:00:0c:9f:f0:3d to 00:00:0c:07:ac:3d on bge0 [ .. ] >> The result of that, is that loads of FreeBSD machines (6.x, 7.x and >> 8.x) dev

Re: Network stack unstable after arp flapping

2011-04-01 Thread Brandon Gooch
On Fri, Apr 1, 2011 at 9:50 AM, Steve Polyack wrote: > On 04/01/11 10:16, Frederique Rijsdijk wrote: >> >> Hi, >> >> We (hosting provider) are in the process of implementing ipv6 in our >> network (yay). Yesterday one of the final steps in configuring and updating >> our core routers were taken, w

Re: Network stack unstable after arp flapping

2011-04-01 Thread Steve Polyack
On 04/01/11 10:16, Frederique Rijsdijk wrote: Hi, We (hosting provider) are in the process of implementing ipv6 in our network (yay). Yesterday one of the final steps in configuring and updating our core routers were taken, which did not go entirely as planned. As a result, the default gatewa

Network stack unstable after arp flapping

2011-04-01 Thread Frederique Rijsdijk
Hi, We (hosting provider) are in the process of implementing ipv6 in our network (yay). Yesterday one of the final steps in configuring and updating our core routers were taken, which did not go entirely as planned. As a result, the default gateway mac addresses for all our machines changed abo