[netbsd4.0]could you tell me why NetBSD did not send link-local NS when NetBSD, rebooted.

[wang_jiabo]

Hello, all:
could you tell me why NetBSD did not send link-local NS when NetBSD
rebooted.
I add ip6mode=autohost in /etc/rc.conf and add up in ifconfig.<IF> file
thanks
jiabo

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[wang_jiabo]

Hello, all :
when NetBSD rebooted, NetBSD should send a link-local Neighbor
Solicitation(NS), but I didnot capture the NS by tcpdump.
could you tell me why.
Thanks
jiabo

Post by wang_jiabo
could you tell me why NetBSD did not send link-local NS when NetBSD
rebooted.
I add ip6mode=autohost in /etc/rc.conf and add up in ifconfig.<IF> file
thanks
jiabo

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[Hubert Feyrer]

Post by wang_jiabo
when NetBSD rebooted, NetBSD should send a link-local Neighbor
Solicitation(NS), but I didnot capture the NS by tcpdump.
could you tell me why.

The 'ip6mode=autohost' only tells the system to _accept_ router
advertizements. To solicitate a RA, you have to run rtsol. You can do so
by setting 'rtsol=yes' in /etc/rc.conf.

Documentation: http://www.netbsd.org/docs/network/ipv6/index.html


- Hubert

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[Ignatios Souvatzis]

Post by Hubert Feyrer

Post by wang_jiabo
when NetBSD rebooted, NetBSD should send a link-local Neighbor
Solicitation(NS), but I didnot capture the NS by tcpdump.
could you tell me why.

The 'ip6mode=autohost' only tells the system to _accept_ router
advertizements. To solicitate a RA, you have to run rtsol. You can do so
by setting 'rtsol=yes' in /etc/rc.conf.

Irrelevant - wang_jiabo wants double address detection, implemented by
sending a neighbour solicitation for your own address. This should work
out of the box whenever an address is added (I think), and it works for
me at boot time...

Maybe a media negotiation problem using the crosslink cable...

Wait. GE and crossed cable? Use a straight one, please!

-is

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[der Mouse]

Wait. GE and crossed cable? Use a straight one, please!

I thought GigE was always auto-X. Or do you suspect a broken
implementation that isn't doing auto-X correctly?

I'd suspect a case where autonegotiation hasn't finished by the time
the NS is sent, so it gets lost. I've seen similar things happen often
enough, and I haven't seen any information that rules it out here.

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Post by der Mouse

Wait. GE and crossed cable? Use a straight one, please!

I thought GigE was always auto-X. Or do you suspect a broken
implementation that isn't doing auto-X correctly?

I suspect a cable that is partially swapped - just enough for
10/100. I don't want to ahve to think about what happens with
Gig_E in that case.

-is