Hi Norman, On Fri, Mar 23, 2007 at 04:08:49PM -0400, Norman Ramsey wrote: > > On Sat, 10.03.07 12:20, Norman Ramsey ([EMAIL PROTECTED]) wrote: > > > > > With a recent update, it now takes me 10 or 15 seconds to do any opeation > > > involving ssh. Using strace, I believe I've tracked the problem > > > to avahi's lair. Here's a fragment of an strace: the NSS opens > > > libness_mdns4, which connects to an avahi-daemon socket and asks it to > > > resolve a dotted-decimal address. It takes 5 seconds to time out > > > (i.e., it takes 5 seconds for the read() to complete). For reasons I > > > don't understand, ssh does this lookup *twice* to make a connection. > > > Result: every little remote cvs operation comes with a 10-second > > > delay. This is driving me crazy; can anyone think of a workaround? > > > > If nsswitch.conf is configured correctly (and yours appears to be), > > this timeout should only happen if no DNS reverse name is configured > > for that IP address, and neither a mDNS reverse name. > > Very odd. There is a DNS server built into my firewall and this is > probably causing the problem. > > > There are several way to work around this: > > > > 1) Remove the final "mdns4" from the nsswitch.conf line. This will > > disable reverse mDNS lookups for all IP addresses outside the > > 169.254.0.0/16 range. > > If I remove mdns4, will the earlier mdns4_minimal be sufficient to > identify hosts in the .local domain on the same LAN segment?
Yes mdns4_minimal only attempts to resolve .local hostnames and reverse DNS in the 169.254.0.0 range Cheers, Trent > > > The current default behaviour does its best to avoid this timeout, by > > putting the DNS lookups first, but you're still bitten because your > > DNS doesn't include proper mappings for this IP address. > > Yes. I blame Bill Gates (the firewall is made by Microsoft). > > > Thanks so much for the workarounds! > > > Norman > _______________________________________________ > avahi mailing list > [email protected] > http://lists.freedesktop.org/mailman/listinfo/avahi _______________________________________________ avahi mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/avahi
