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DNS issue after UTM reboot

Hello,

 

I experience some issues with Sophos UTM 9 after a reboot. I am connecting to ISP via pppoe , if the system rebooted I do not have a connection to internet even if the pppoe interface is showing to be up. If i reconnect the interface everything seems fine and working.The only error I see in the logs is " DNS server failed to contact!".I've followed all DNS related guidelines from this forum with no success.

Is there any workaround to push a pppoe reconnect after 5 minutes after reboot or do you know how to fix this issue? Thank you in advance.

 

Logs below:

System messages: 

017:02:11-09:52:58 UTM dns-resolver[7015]: DNS server failed to contact!
2017:02:11-09:52:59 UTM dns-resolver[7015]: Adding REF_DefaultSophosUTMSupportHost
2017:02:11-09:52:59 UTM dns-resolver[7015]: Adding REF_NetDnsIPrep1t
2017:02:11-09:52:59 UTM dns-resolver[7015]: Adding REF_NetDnsIPrep5t
2017:02:11-09:52:59 UTM dns-resolver[7015]: Adding REF_NetDnsResolver2a
2017:02:11-09:52:59 UTM dns-resolver[7015]: Adding REF_NetDnsIPrep4t
2017:02:11-09:52:59 UTM dns-resolver[7015]: Adding REF_NetDnsIPrep2t
2017:02:11-09:52:59 UTM dns-resolver[7015]: Adding REF_NetDnsResolver4a
2017:02:11-09:52:59 UTM dns-resolver[7015]: Adding REF_NetDnsIPrep3t
2017:02:11-09:52:59 UTM dns-resolver[7015]: Adding REF_NetDnsResolver3a
2017:02:11-09:52:59 UTM dns-resolver[7015]: Adding REF_NetDnsResolver1a
2017:02:11-09:52:59 UTM dns-resolver[7015]: Adding REF_NetDnsResolver5a
2017:02:11-09:52:59 UTM dns-resolver[7015]: Adding REF_NetDnsSophoLivec
2017:02:11-09:52:59 UTM dns-resolver[7015]: Adding REF_NtpPool
2017:02:11-09:52:59 UTM dns-resolver[7015]: DNS server failed to contact!
2017:02:11-09:53:59 UTM dns-resolver[7015]: DNS server failed to contact!

 

pppoe logs:

2017:02:11-09:52:29 UTM pppd-pppoe[6895]: sent [LCP ProtRej id=0x2 80 57 01 01 00 0e 01 0a 00 00 00 00 00 00 00 01]
2017:02:11-09:52:29 UTM pppd-pppoe[6895]: rcvd [IPCP ConfNak id=0x1 <addr x.x.x.x> <ms-dns1 193.232.253.1> <ms-dns2 213.154.126.1>]
2017:02:11-09:52:29 UTM pppd-pppoe[6895]: sent [IPCP ConfReq id=0x2 <addr x.x.x.x> <ms-dns1 193.232.253.1> <ms-dns2 213.154.126.1>]
2017:02:11-09:52:29 UTM pppd-pppoe[6895]: rcvd [IPCP ConfAck id=0x2 <addr x.x.x.x> <ms-dns1 193.232.253.1> <ms-dns2 213.154.126.1>]
2017:02:11-09:52:29 UTM pppd-pppoe[6895]: local IP address "x.x.x.x" (just hidden my IP :)
2017:02:11-09:52:29 UTM pppd-pppoe[6895]: remote IP address 10.1.1.1
2017:02:11-09:52:29 UTM pppd-pppoe[6895]: primary DNS address 193.232.253.1
2017:02:11-09:52:29 UTM pppd-pppoe[6895]: secondary DNS address 213.154.126.1
2017:02:11-09:52:29 UTM pppd-pppoe[6895]: Script /etc/ppp/ip-up started (pid 7006)
2017:02:11-09:52:30 UTM pppd-pppoe[6895]: Script /etc/ppp/ip-up finished (pid 7006), status = 0x0

 

Thank you in advance. 

Gheb



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  • Hi,

    sorry I can't tell much from you log dumps.

    Do you use the UTM as a DNS forwarder if so does your ISP provide you with DNS as part of of the PPPoE connection?

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  • Hi rfcat_vk,

     

    Yes I am using it . I tried also "Use forwarders assigned by ISP" and I have the same result. 

    The ISP provides the DNS as part of the PPPoE connection. As mentioned , once it reboots and I manually hit reconnect it works .

     

    Raul

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  • Hi rfcat_vk,

     

    Yes I am using it . I tried also "Use forwarders assigned by ISP" and I have the same result. 

    The ISP provides the DNS as part of the PPPoE connection. As mentioned , once it reboots and I manually hit reconnect it works .

     

    Raul

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