Hello, I have found another situation with bad UDP checksums:
For Debian wheezy, I created the attached Debian package, containing a simple Perl script IRB-DHCP-Client, which takes a network interface name and a timeout value as its arguments, sends a broadcast DHCP request to the network, waits for an answer from a DHCP Server and finally prints the values it got from the server to stdout. The script worked fine in wheezy, but it does not work in jessie. tcpdump says that the DHCP requests contain bad UDP checksums. I am not sure if that problem is really caused by libnet-rawip-perl - the package source is almost the same as in wheezy, only debian/changelog and debian/control are different. But I have no better idea where to report that bug. Regards Christoph
irb-dhcp-client_2.1_all.deb
Description: application/deb
