Date: Sun, 14 Feb 2021 14:15:51 -0800 From: Doug Hardie <bc979@lafn.org> To: freebsd-net@freebsd.org Subject: Re: Changes in IPv6 between FreeBSD 12.2 and 13.0-BETA2 Message-ID: <9DA0CC79-1C0E-48BB-BE40-1DD2930AFC8D@sermon-archive.info> In-Reply-To: <B234B3BF-5DC8-4DD2-9AF2-F887746F0881@sermon-archive.info> References: <B234B3BF-5DC8-4DD2-9AF2-F887746F0881@sermon-archive.info>
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> On 14 February 2021, at 00:18, Doug Hardie <doug@sermon-archive.info> wrote: > > Are there any changes in the IPv6 configuration? I have multiple machines. Some are still on 12.2 and one on 13.0. I have configured both as described in the handbook for IPv6. The 13.0 machine can ping the router just fine and the router shows in ndp: > > Neighbor Linklayer Address Netif Expire S Flags > fe80::120c:6bff:fee9:cdf7%bge0 10:0c:6b:e9:cd:f7 bge0 23h33m12s S > fee1::230 68:5b:35:d3:4e:da bge0 permanent R > fe80::6a5b:35ff:fed3:4eda%bge0 68:5b:35:d3:4e:da bge0 permanent R > > The first entry is the router. Its a real router, not a FreeBSD machine. > > On the 12.2 systems I get from ndp: > > Neighbor Linklayer Address Netif Expire S Flags > fee1::250 38:c9:86:07:3b:5b bge0 permanent R > fe80::3ac9:86ff:fe07:3b5b%bge0 38:c9:86:07:3b:5b bge0 permanent R > > The router doesn't show and ping6 of it's address yields: > PING6(56=40+8+8 bytes) fe80::3ac9:86ff:fe07:3b5b%bge0 --> fe80::120c:6bff:fee9:cdf7%bge0 > > Nothing more for quite awhile. > > I suspect there is a configuration item needed in 12.2 that is no longer needed for 13 but I haven't figured out what that would be. I have confirmed that the 12.2 system is receiving the router advertisements. They are just being ignored. > Found the problem. pf was blocking the advertisements. -- Doug
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