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| I don't know how formal NANOG meetings [are]

Very formal. Wear a suit.

Sean.

Actually, I think the rules state that if you wear a suit, you have to wear open-toed sandals (no socks) or you'll have to sit in the back rows, or between Sean and Curtis, whichever bothers you least.

is this a joke ? I will attend for the first time. Someone tell me, so I don't make an ass out of myself with sneakers, T-shirt and baseballcap worn backwards :)

I think the baseball cap on backwards might also be a sign of normality which would cause initial wariness on the part of others @ NANOG. But sandals, shorts, t-shirts <= x <= slacks and button down shirt (tie strictly optional) hit the middle 90% of attire pretty well.

bye,Kai

Avi