message "unable to setsocketopt(IP_TOS)" in logs

[Chentao Credungtao]

Hi,

I just installed Debian 9.3 / Cyrus IMAP 2.5.10 in an LXC container, and 
I get the following error whenever I start/restart cyrus :

cyrus/master[7082]: unable to setsocketopt(IP_TOS) service 
lmtpunix/unix: Operation not supported
cyrus/master[7082]: unable to setsocketopt(IP_TOS) service notify/unix: 
Operation not supported

Apart of that, everything seems to work just fine.

Could this maybe be due to the fact that I run Cyrus in an LXC container ?

Thanks,

Chen

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