Takanori-san, I don't see no-decrement ra option in rfc4861. Could you please provide a reference in a document first.
Thanks, Hemant -----Original Message----- From: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> On Behalf Of Takanori Hirano via lists.fd.io Sent: Monday, August 01, 2022 7:01 AM To: vpp-dev@lists.fd.io Subject: Re: [vpp-dev] Unable to set valid-lifetime in ipv6 ra Dear Mr. Andrew Yourtchenko, Thank you for your review and merge. It is an honor to contribute with your great support. I have newly added the no-decrement option to ra config. Can you please review this one too? https://gerrit.fd.io/r/c/vpp/+/36781 > Takanori-san, > > Thanks a lot for the confirmation ! I had a closer review and I was > indeed incorrect in my quick look - the lifetimes are handled below. > I was looking only at the loop itself. > > I have merged your fix. Thank you very much for your contribution! > > --a > > > On 30 Jul 2022, at 05:25, Takanori Hirano via lists.fd.io > > <me=hrntknr....@lists.fd.io> wrote: > > > > Dear Mr. Andrew Yourtchenko, > > > > Thanks for the review. We have checked the actual packets created. > > > > ``` > > create tap > > set interface state tap0 up > > set ip6 address tap0 2001:db8::/64 > > ip6 nd tap0 prefix 2001:db8::/64 14400 12600 > > ip6 nd tap0 no ra-suppress > > ``` > > > > > > The result of rdisc6 at this time was this. > > (pcap is also available in the attachment) > > > > ``` > > rdisc6 tap0 > > Soliciting ff02::2 (ff02::2) on tap0... > > > > Hop limit : 64 ( 0x40) Stateful > > address conf. : No Stateful other conf. : > > No Mobile home agent : No Router preference > > : medium Neighbor discovery proxy : No Router > > lifetime : 600 (0x00000258) seconds Reachable > > time : unspecified (0x00000000) Retransmit time > > : unspecified (0x00000000) > > Source link-layer address: 02:FE:A7:E5:46:11 > > MTU : 9000 bytes (valid) > > Prefix : 2001:db8::/64 > > On-link : Yes > > Autonomous address conf.: Yes > > Valid time : 14384 (0x00003830) seconds > > Pref. time : 12584 (0x00003128) seconds > > from fe80::fe:a7ff:fee5:4611 > > ``` > > > > The decrement_lifetime_flag/deprecated_prefix_flag is 1, so the > > packet looks correct. > > (14400 > 14384, 12600 > 12584) > > > > > > > Takanori-san, > > > > > > Did you verify with the tcpdump/wire shark that your patch > > > achieves the intended result of setting the lifetime ? > > > > > > From my quick look it seems like this suggested change will not > > > achieve the behavior you are looking for; but I am not very > > > familiar with that part of the code so may be mistaken, so that’s > > > why suggested using the wireshark. > > > > > > --a > > > > > > > On 29 Jul 2022, at 13:38, Takanori Hirano via lists.fd.io > > > > <me=hrntknr....@lists.fd.io> wrote: > > > > Hi. > > > > > > > > I have found a problem with vppctl when configuring ipv6 per- > > > > prefix (valid-lifetime, pref-lifetime, etc.), which causes an > > > > error. > > > > > > > > vpp# ip6 nd tap prefix 240b:10:9ab0:2201::1/64 14400 12600 > > > > ip6 nd: parse error `14400 12600' > > > > > > > > I have created my first patch and would appreciate anyone's > > > > review. > > > > https://gerrit.fd.io/r/c/vpp/+/36779 > > > > > > > >
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