------- Comment From mk...@de.ibm.com 2019-05-08 09:20 EDT------- A little bit more information:
``` $# ipsec version Linux strongSwan U5.6.2/K4.15.0-42-generic Institute for Internet Technologies and Applications University of Applied Sciences Rapperswil, Switzerland See 'ipsec --copyright' for copyright information. ``` ``` $# cat /etc/ipsec.conf config setup conn main<ip> type=transport authby=psk left=%any #<ip> leftsubnet=<ip> right=%any rightsubnet=<ip> auto=route compress=no esp=aes128gcm8 fragmentation=yes keyexchange=ikev2 ``` -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1828035 Title: StrongSwan with GCM and large packet sizes produces unstable behavior Status in Ubuntu on IBM z Systems: Confirmed Status in linux package in Ubuntu: Confirmed Status in strongswan package in Ubuntu: Incomplete Bug description: StrongSwan with GCM and large packet sizes produces unstable behavior when used in Linux native environment. ---uname output--- Linux ubu01 4.15.0-42-generic #45-Ubuntu SMP Thu Nov 15 19:29:11 UTC 2018 s390x s390x s390x GNU/Linux Machine Type = 3906 / M04 (z14), LPAR (dedicated) ---Debugger--- A debugger is not configured ---Steps to Reproduce--- On two separate machines (Linux native), install StrongSwan and on both machines, configure the encryption with aes128gcm8 for IPsec. Then run the following command from one of the machine: ``` $# ping <other_machine_ip> -s 1024 ``` Small packet sizes are working as expected. However, anything large (around 1024 bytes or more) are sometimes returning wrong values, or the packets are getting lost. This problem does not occur for ciphers not involving GCM. Userspace tool common name: StrongSwan The userspace tool has the following bit modes: both Userspace package: StrongSwan Userspace tool obtained from project website: na -Attach ltrace and strace of userspace application. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1828035/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
