nanog mailing list archives
Re: Do you care about "gray" failures? Can we (network academics) help? A 10-min survey
From: Baldur Norddahl <baldur.norddahl () gmail com>
Date: Thu, 8 Jul 2021 22:10:15 +0200
We had a line card that would drop any IPv6 packet with bit #65 in the destination address set to 1. Turns out that only a few hosts have this bit set to 1 in the address, so nobody noticed until some debian mirrors started to become unreachable. Also webbrowser are very good at switching to IPv4 in case of IPv6 timeouts, so nobody would notice web hosts with the problem. And then we had to live with the problem for a while because the device was out of warranty and marked to be replaced, but you do not just replace a router in a hurry unless you absolutely need to. You do not expect this kind of issue and a lot of time was spent trying to find an alternate explanation for the problem. Regards, Baldur
Current thread:
- Do you care about "gray" failures? Can we (network academics) help? A 10-min survey Vanbever Laurent (Jul 08)
- Re: Do you care about "gray" failures? Can we (network academics) help? A 10-min survey Saku Ytti (Jul 08)
- Re: Do you care about "gray" failures? Can we (network academics) help? A 10-min survey Mark Tinka (Jul 08)
- Re: Do you care about "gray" failures? Can we (network academics) help? A 10-min survey Mark Tinka (Jul 08)
- Re: Do you care about "gray" failures? Can we (network academics) help? A 10-min survey Vanbever Laurent (Jul 08)
- Re: Do you care about "gray" failures? Can we (network academics) help? A 10-min survey colin johnston (Jul 08)
- Re: Do you care about "gray" failures? Can we (network academics) help? A 10-min survey Mark Tinka (Jul 08)
- Re: Do you care about "gray" failures? Can we (network academics) help? A 10-min survey Jörg Kost (Jul 08)
- Re: Do you care about "gray" failures? Can we (network academics) help? A 10-min survey Vanbever Laurent (Jul 08)
- Re: Do you care about "gray" failures? Can we (network academics) help? A 10-min survey Baldur Norddahl (Jul 08)
- Re: Do you care about "gray" failures? Can we (network academics) help? A 10-min survey Chriztoffer Hansen (Jul 09)
- Re: Do you care about "gray" failures? Can we (network academics) help? A 10-min survey Saku Ytti (Jul 08)
- Re: Do you care about "gray" failures? Can we (network academics) help? A 10-min survey Saku Ytti (Jul 08)
- Re: Do you care about "gray" failures? Can we (network academics) help? A 10-min survey Vanbever Laurent (Jul 08)
- Re: Do you care about "gray" failures? Can we (network academics) help? A 10-min survey Saku Ytti (Jul 08)