Re: [PATCH v2 1/1] iroute2: Add support for GRE ignore-df knob

2017-07-20 Thread Stephen Hemminger
On Wed, 19 Jul 2017 23:19:33 -0600 "Philip Prindeville" wrote: > From: Philip Prindeville > > In the presence of firewalls which improperly block ICMP Unreachable > (including Fragmentation Required) messages, Path MTU Discovery is > prevented from working. > > The workaround is to handle IPv4

[PATCH v2 1/1] iroute2: Add support for GRE ignore-df knob

2017-07-19 Thread Philip Prindeville
From: Philip Prindeville In the presence of firewalls which improperly block ICMP Unreachable (including Fragmentation Required) messages, Path MTU Discovery is prevented from working. The workaround is to handle IPv4 payloads opaquely, ignoring the DF bit. Reviewed-by: Stephen Hemminger Signe