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pubudeux
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CRS317 v7.1beta2 - arp=reply-only on VLAN interface causes router to enter fault

Tue Dec 15, 2020 12:47 am

Hey,

CRS317
RouterOS v7.1beta2

Thought I would report this issue:

Trying to set up DHCP-only access on a dhcp server which is listening on a VLAN interface. I set add-arp on the DHCP server and set arp=reply-only on the vlan interface.

As soon as I did this, the router stopped responding completely, on all other vlans/interfaces, and was not even able to telnet in from winbox on management port. The router returned to working after a power-cycle, and it did not preserve my setting of arp=reply-only on the interface.

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