Description of problem: "telnet" can not work, when we changed "mtu" into less than 64. We tried to "ping" on another PC at the time, but can not receive. Version-Release number of selected component (if applicable): - telnet-0.17-30 - telnet-server-0.17-30 How reproducible: Always Steps to Reproduce: 1."# ifconfig eth0 mtu 64" 2.Login using "telnet" on another PC. 3. Actual results: We can not work "telnet". Expected results: What we'd like to know is as follows. ------------------------------------------------------------------ - Why can we change "mtu" into less than 64 ? - How to re-connect without reboot.(if any) - Message "SIOCSIFMTU: Invalid argument" is shown, we changed "mtu" into less than 40. Why can we change "mtu" into less than 40 ? ------------------------------------------------------------------ Additional info: - client:RHEL-Beta1 - host :RHEL-Beta2
Well, if you have an ethernet interface, setting the MTU below or equal 64 is, well ... , not very productive, because no DATA could be sent, except the pure ethernet packet..
Please not close this problem. Is what you say follows info is hardware's feature ? - MTU's min is setting less than 64. - If MTU's value is 40, software do not recognize. --- Is the setting info indicated hardware specifications ? Or can we find linux command ? Moreover, could you teach me how to re-connect.
Hi, for these kind of questions, we created a mailing list, where you can meet lots of helpful people from all around the world. The list is called fedora-list mailing list (fedora-list) and you can subscribe by visiting http://www.redhat.com/mailman/listinfo/fedora-list Thank you and have fun Harald Hoyer
We wish answer from Bugzilla. Because we explain to user, "Answer from Bugzilla is .....". Our analysis is right ? ------------------------------------------ If we set mtu less than 64, ping/telnet can not work. Because no DATA could be sent. ------------------------------------------ Moreover, we would like to know that ------------------------------------------ 1) The cause that status of eth0 on host becomes linkdown, when we set mtu less than 64. 2) How to recover eth0. ------------------------------------------
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