[GLLUG] Network Shenanigans

[Chick Tower]

I like to go to the new Delta Township library and use their wireless 
access.  The last couple of times I've been there, everything goes fine 
for a while and then I can't connect to websites.  I don't know if I 
lose my network connection entirely or just the DNS; I didn't think to 
try pinging an IP address rather than www.google.com.  I did capture the 
tail-end of dmesg, included below.  (The final two lines are actually 
one line, for a total of ten lines.)   It looks like I do connect fine, 
and then errors occur.  I can't tell if it's something on my laptop or 
something with the library's configuration.  Can anyone tell what 
happened, or how to investigate further?  Thanks.
-- 

                                Chick
====================================
wlan0: associate with AP 00:22:57:1f:e3:af (try 1)
wlan0: RX AssocResp from 00:22:57:1f:e3:af (capab=0x401 status=0 aid=7)
wlan0: associated
cfg80211: Calling CRDA for country: US
NET: Registered protocol family 10
lo: Disabled Privacy Extensions
ADDRCONF(NETDEV_UP): eth0: link is not ready
wlan0: no IPv6 routers present
wlan0: disassociated from 00:22:57:1f:e3:af (Reason: 4)
wlan0: deauthenticating from 00:22:57:1f:e3:af by local choice (reason=3)