Are you running ufw or some other FW on your machines? Then have a look what is shows in the logs. Try 'tail -f /var/log/syslog' in a terminal window. Look at it for a while so you see what is normal. Then start your programs that doesn't work.
Post the output the is relevant to your machines or servers IP address. In ufw, I might look like this: [UFW BLOCK] IN=br0 OUT= MAC= SRC=192.168.1.20 DST=239.255.255.250 LEN=122 TOS=0x00 PREC=0x00 TTL=1 ID=0 DF PROTO=UDP SPT=53194 DPT=1900 LEN=102 Good luck -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/776768 Title: vlc cannot open RTP network streams in natty To manage notifications about this bug go to: https://bugs.launchpad.net/ufw/+bug/776768/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
