# tcpdump -vv src port 7303 and dst master1.teeworlds.com or dst master2.teeworlds.com or dst master3.teeworlds.com
tcpdump: listening on venet0, link-type LINUX_SLL (Linux cooked), capture size 262144 bytes
12:11:19.510653 IP (tos 0x0, ttl 64, id 53973, offset 0, flags [DF], proto UDP (17), length 42)
    ip-149-202-127-134.mein-vserver.com.7303 > twmaster3.teecloud.eu.8301: [bad udp cksum 0xcaa8 -> 0x70b4!] UDP, length 14
12:11:20.418037 IP (tos 0x0, ttl 64, id 23333, offset 0, flags [DF], proto UDP (17), length 47)
    ip-149-202-127-134.mein-vserver.com.8705 > twmaster2.teecloud.eu.8283: [bad udp cksum 0x6e9f -> 0xa1ff!] UDP, length 19
12:11:22.060158 IP (tos 0x0, ttl 64, id 56204, offset 0, flags [DF], proto UDP (17), length 47)
    ip-149-202-127-134.mein-vserver.com.8702 > twmaster3.teecloud.eu.8283: [bad udp cksum 0xcaad -> 0x5a97!] UDP, length 19
12:11:23.646595 IP (tos 0x0, ttl 64, id 56990, offset 0, flags [DF], proto UDP (17), length 44)
    ip-149-202-127-134.mein-vserver.com.8304 > twmaster3.teecloud.eu.8300: [bad udp cksum 0xcaaa -> 0x1059!] UDP, length 16
12:11:23.791609 IP (tos 0x0, ttl 64, id 26615, offset 0, flags [DF], proto UDP (17), length 45)
    ip-149-202-127-134.mein-vserver.com.8705 > twmaster2.teecloud.eu.8284: [bad udp cksum 0x6e9d -> 0x126c!] UDP, length 17
12:11:23.967045 IP (tos 0x0, ttl 64, id 57092, offset 0, flags [DF], proto UDP (17), length 45)
    ip-149-202-127-134.mein-vserver.com.8702 > twmaster3.teecloud.eu.8284: [bad udp cksum 0xcaab -> 0x3f79!] UDP, length 17
12:11:24.485909 IP (tos 0x0, ttl 64, id 57220, offset 0, flags [DF], proto UDP (17), length 42)
    ip-149-202-127-134.mein-vserver.com.8304 > twmaster3.teecloud.eu.8301: [bad udp cksum 0xcaa8 -> 0x6ccb!] UDP, length 14
12:11:24.591731 IP (tos 0x10, ttl 64, id 57277, offset 0, flags [DF], proto UDP (17), length 44)
    ip-149-202-127-134.mein-vserver.com.8303 > twmaster3.teecloud.eu.8300: [bad udp cksum 0xcaaa -> 0x105b!] UDP, length 16
12:11:25.172797 IP (tos 0x0, ttl 64, id 27234, offset 0, flags [DF], proto UDP (17), length 47)
    ip-149-202-127-134.mein-vserver.com.8707 > twmaster2.teecloud.eu.8283: [bad udp cksum 0x6e9f -> 0x37bf!] UDP, length 19