Deflakify the PMTU test.

For reasons I don't understand, sending traffic and receiving a
Packet Too Big error just after the network is set up sometimes
doesn't work - the packet doesn't even make it to icmpv6_rcv.

Add a sleep statement to fix this for now.

Change-Id: If1751e005a89f44c4d1784ef46bef97031c90a64
1 file changed
tree: ae11b358883c5b74065b1ade1fe83a7fa11e5100
  1. net/