Re: Interface MTU question...

2012-07-16 Thread Andre Oppermann
On 12.07.2012 16:55, George Neville-Neil wrote: On Jul 11, 2012, at 17:57 , Navdeep Parhar wrote: On 07/11/12 14:30, g...@freebsd.org wrote: Howdy, Does anyone know the reason for this particular check in ip_output.c? if (rte != NULL && (rte->rt_flags & (RTF_UP|RTF_HOST))) {

Re: Interface MTU question...

2012-07-15 Thread Jason Hellenthal
Filed as, http://www.freebsd.org/cgi/query-pr.cgi?pr=169898 Thanks for looking into this when you get time. On Thu, Jul 12, 2012 at 04:49:23PM -0400, George Neville-Neil wrote: > > On Jul 12, 2012, at 12:55 , Jason Hellenthal wrote: > > > > > > > On Thu, Jul 12, 2012 at 10:55:16AM -0400,

Re: Interface MTU question...

2012-07-12 Thread Doug Barton
On 07/12/2012 01:50 PM, George Neville-Neil wrote: > > On Jul 12, 2012, at 14:28 , Doug Barton wrote: > >> While y'all are looking at MTU (which is an increasingly important topic >> as we move into a Gig+ world) I'm wondering what our support is for >> https://tools.ietf.org/html/rfc4821 ?? I as

Re: Interface MTU question...

2012-07-12 Thread George Neville-Neil
On Jul 12, 2012, at 14:28 , Doug Barton wrote: > While y'all are looking at MTU (which is an increasingly important topic > as we move into a Gig+ world) I'm wondering what our support is for > https://tools.ietf.org/html/rfc4821 ?? I asked this a while back and > never got an answer. > > This m

Re: Interface MTU question...

2012-07-12 Thread George Neville-Neil
On Jul 12, 2012, at 12:55 , Jason Hellenthal wrote: > > > On Thu, Jul 12, 2012 at 10:55:16AM -0400, George Neville-Neil wrote: >> >> On Jul 11, 2012, at 17:57 , Navdeep Parhar wrote: >> >>> On 07/11/12 14:30, g...@freebsd.org wrote: Howdy, Does anyone know the reason for this

Re: Interface MTU question...

2012-07-12 Thread Doug Barton
While y'all are looking at MTU (which is an increasingly important topic as we move into a Gig+ world) I'm wondering what our support is for https://tools.ietf.org/html/rfc4821 ?? I asked this a while back and never got an answer. This method of PMTUD is really important given the massive (stupid)

Re: Interface MTU question...

2012-07-12 Thread Andrew Boyer
On Jul 12, 2012, at 12:55 PM, Jason Hellenthal wrote: > Something else to look into ... > > # ifconfig lagg0 mtu 1492 > ifconfig: ioctl (set mtu): Invalid argument > > This is on stable/8 r238264 when the interface was up/up and down/down > > Also attempted on the member interfaces dc0 and dc1

Re: Interface MTU question...

2012-07-12 Thread Jason Hellenthal
On Thu, Jul 12, 2012 at 10:55:16AM -0400, George Neville-Neil wrote: > > On Jul 11, 2012, at 17:57 , Navdeep Parhar wrote: > > > On 07/11/12 14:30, g...@freebsd.org wrote: > >> Howdy, > >> > >> Does anyone know the reason for this particular check in > >> ip_output.c? > >> > >>if (rte !=

Re: Interface MTU question...

2012-07-12 Thread George Neville-Neil
On Jul 11, 2012, at 17:57 , Navdeep Parhar wrote: > On 07/11/12 14:30, g...@freebsd.org wrote: >> Howdy, >> >> Does anyone know the reason for this particular check in >> ip_output.c? >> >> if (rte != NULL && (rte->rt_flags & (RTF_UP|RTF_HOST))) { >> /* >> * This

Re: Interface MTU question...

2012-07-11 Thread Navdeep Parhar
On 07/11/12 14:30, g...@freebsd.org wrote: Howdy, Does anyone know the reason for this particular check in ip_output.c? if (rte != NULL && (rte->rt_flags & (RTF_UP|RTF_HOST))) { /* * This case can happen if the user changed the MTU * of

Interface MTU question...

2012-07-11 Thread gnn
Howdy, Does anyone know the reason for this particular check in ip_output.c? if (rte != NULL && (rte->rt_flags & (RTF_UP|RTF_HOST))) { /* * This case can happen if the user changed the MTU * of an interface after enabling IP on it. Becaus