Git push problem

[Mark Rivers via Core-talk <core-talk at aps.anl.gov>]

Folks,

 

I am trying to push to the Github asyn repository from a Linux system that has worked for many years.  It worked as recently as January 6.  But now I am getting this error:

 

corvette:~/devel/asyn>git push

Unable to negotiate with 140.82.113.4 port 22: no matching MAC found. Their offer: hmac-sha2-512-etm at openssh.com,hmac-sha2-256-etm at openssh.com,hmac-sha2-512,hmac-sha2-256

fatal: Could not read from remote repository.

 

Please make sure you have the correct access rights

and the repository exists.

 

When I run ssh –Q mac it seems like I have all of their support MAC types:

 

corvette:~/devel/asyn>ssh -Q mac

hmac-sha1

hmac-sha1-96

hmac-sha2-256

hmac-sha2-512

hmac-md5

hmac-md5-96

hmac-ripemd160

hmac-ripemd160 at openssh.com

umac-64 at openssh.com

umac-128 at openssh.com

hmac-sha1-etm at openssh.com

hmac-sha1-96-etm at openssh.com

hmac-sha2-256-etm at openssh.com

hmac-sha2-512-etm at openssh.com

hmac-md5-etm at openssh.com

hmac-md5-96-etm at openssh.com

hmac-ripemd160-etm at openssh.com

umac-64-etm at openssh.com

umac-128-etm at openssh.com

 

My ssh keys have not changed.  I removed github.com from known_hosts just in case that was the problem.

 

corvette:~/.ssh>ls -l

total 28

-rw------- 1 epics domain users  3243 Nov 18  2019 id_rsa

-rw-r--r-- 1 epics domain users   750 Nov 18  2019 id_rsa.pub

-rw-r--r-- 1 epics domain users 17340 Jan 11 12:30 known_hosts

 

Any idea how to fix this?

 

Thanks,

Mark