Strange DHCP issue. Assigned /8 instead /24 on Linux devices.
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Sorry guys, totally my bad :(
I'm not fully understand how works Additional DHCP settings in pfsense...
At very strange situation, I have option "1" in Additional DHCP settings with parameter "text", and under this table was button "add", I think I need to push this button for take effect....
I'm totally don't know how "1" was typed here, maybe my mistake (missclick), maybe something else...
I removed "1" from the option, and then the correct mask was successfully assigned to my devices...I really want to make a death facepalm to myself.
@chpalmer you was right!
@JKnott thank you, I think I don't take attention to this parameter without your comment.
Also, I deleted my dump and other files that may have my personal data.
Thanks to all. This theme may be closed, and marked as solved.
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@lazy said in Strange DHCP issue. Assigned /8 instead /24 on Linux devices.:
When I connect any Linux based device (Debian, Ubuntu, Synology, Android, etc), I have assign a wrong DHCP settings with Network mask 255.0.0.0, and can't use Network on some devices (Android and Synology works, but any of Linux distro won't works).
One thing on this, back in the classfull subnet days, a 10.0.0.0 network was a class A network, with a /8 subnet mask. It appears Linux is following that convention. I have no idea why other devices are doing otherwise.
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@JKnott I have no idea too...
All Linux devices was followed this rules, but windows devices are followed too, but not all.
I have 3 Windows 10 devices with assigned /8 in this situation, and all other devices was assigned /24 in this situation.
But now all works well, I fixed this issue by removing Aditional DHCP settings, as i told before.Thanks again!
