Ubuntu 18.04 server dhcp issues on VirtualBox 6.0.4 with bridged adapter












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I'm having issues with dhcp on virtualbox 6.0.4 with an ubuntu 18.04 server guest -- when using a bridged adapter, it hangs on startup while configuring network settings, and dhclient just fails repeatedly. Have tried deleting /var/lib/dhcp/dhclient.leases, messing with firewall settings, spoofing my virtual network adapter's mac address, to no avail -- but only on my university's student network. On a private network it works as expected. Any hunches or suggestions appreciated.



I have run through the output of several different network interface commands and files that are too lengthy to include all of in this question, but if someone with more knowledge than me has a better idea of which are the most pertinent I will keep updating the question.



I'm using netplan, my config is as follows:



network:
ethernets:
enp0s3
dhcp4: true
version: 2









share|improve this question























  • Since you say the whole setup works on one network, but not another, it would suggest there is a configuration difference in the networks. Are you allowed to run a dhcp service on the university's student network? I know I would not allow unknown dhcp servers in any subnet I manage. You should ask the administrators of that network if they are blocking you from setting up dhcp servers.

    – GracefulRestart
    Feb 27 at 19:30
















0















I'm having issues with dhcp on virtualbox 6.0.4 with an ubuntu 18.04 server guest -- when using a bridged adapter, it hangs on startup while configuring network settings, and dhclient just fails repeatedly. Have tried deleting /var/lib/dhcp/dhclient.leases, messing with firewall settings, spoofing my virtual network adapter's mac address, to no avail -- but only on my university's student network. On a private network it works as expected. Any hunches or suggestions appreciated.



I have run through the output of several different network interface commands and files that are too lengthy to include all of in this question, but if someone with more knowledge than me has a better idea of which are the most pertinent I will keep updating the question.



I'm using netplan, my config is as follows:



network:
ethernets:
enp0s3
dhcp4: true
version: 2









share|improve this question























  • Since you say the whole setup works on one network, but not another, it would suggest there is a configuration difference in the networks. Are you allowed to run a dhcp service on the university's student network? I know I would not allow unknown dhcp servers in any subnet I manage. You should ask the administrators of that network if they are blocking you from setting up dhcp servers.

    – GracefulRestart
    Feb 27 at 19:30














0












0








0








I'm having issues with dhcp on virtualbox 6.0.4 with an ubuntu 18.04 server guest -- when using a bridged adapter, it hangs on startup while configuring network settings, and dhclient just fails repeatedly. Have tried deleting /var/lib/dhcp/dhclient.leases, messing with firewall settings, spoofing my virtual network adapter's mac address, to no avail -- but only on my university's student network. On a private network it works as expected. Any hunches or suggestions appreciated.



I have run through the output of several different network interface commands and files that are too lengthy to include all of in this question, but if someone with more knowledge than me has a better idea of which are the most pertinent I will keep updating the question.



I'm using netplan, my config is as follows:



network:
ethernets:
enp0s3
dhcp4: true
version: 2









share|improve this question














I'm having issues with dhcp on virtualbox 6.0.4 with an ubuntu 18.04 server guest -- when using a bridged adapter, it hangs on startup while configuring network settings, and dhclient just fails repeatedly. Have tried deleting /var/lib/dhcp/dhclient.leases, messing with firewall settings, spoofing my virtual network adapter's mac address, to no avail -- but only on my university's student network. On a private network it works as expected. Any hunches or suggestions appreciated.



I have run through the output of several different network interface commands and files that are too lengthy to include all of in this question, but if someone with more knowledge than me has a better idea of which are the most pertinent I will keep updating the question.



I'm using netplan, my config is as follows:



network:
ethernets:
enp0s3
dhcp4: true
version: 2






networking virtualbox network-interface dhcp netplan






share|improve this question













share|improve this question











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asked Feb 27 at 16:58









MoxieBallMoxieBall

1012




1012













  • Since you say the whole setup works on one network, but not another, it would suggest there is a configuration difference in the networks. Are you allowed to run a dhcp service on the university's student network? I know I would not allow unknown dhcp servers in any subnet I manage. You should ask the administrators of that network if they are blocking you from setting up dhcp servers.

    – GracefulRestart
    Feb 27 at 19:30



















  • Since you say the whole setup works on one network, but not another, it would suggest there is a configuration difference in the networks. Are you allowed to run a dhcp service on the university's student network? I know I would not allow unknown dhcp servers in any subnet I manage. You should ask the administrators of that network if they are blocking you from setting up dhcp servers.

    – GracefulRestart
    Feb 27 at 19:30

















Since you say the whole setup works on one network, but not another, it would suggest there is a configuration difference in the networks. Are you allowed to run a dhcp service on the university's student network? I know I would not allow unknown dhcp servers in any subnet I manage. You should ask the administrators of that network if they are blocking you from setting up dhcp servers.

– GracefulRestart
Feb 27 at 19:30





Since you say the whole setup works on one network, but not another, it would suggest there is a configuration difference in the networks. Are you allowed to run a dhcp service on the university's student network? I know I would not allow unknown dhcp servers in any subnet I manage. You should ask the administrators of that network if they are blocking you from setting up dhcp servers.

– GracefulRestart
Feb 27 at 19:30










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