i never used ip=dhcp in the boot menu entries. strange i had those resolv issue with ubuntu 19.04 daily (pending) from 2019-02-14 for sure. now i tried again with ubuntu 19.04 daily (pending) from 2019-02-20, and now it seems to be not an issue.
i also tried the other versions 18.10 and 18.04.2... there it is no issue with resolv anymore. the only thing i could notice now was, that resolving (ping google.de) takes a bit longer under 19.04 daily than under 18.10 / 18.04.2... or maybe it is only my mind. at the moment i can not reproduce my ony reported resolv issue. :/ pxe boot menu entries: ######################################## LABEL ubuntu-daily-x64 MENU LABEL Ubuntu x64 Daily-Live KERNEL http://192.168.0.1/nfs/ubuntu-daily-x64/casper/vmlinuz INITRD http://192.168.0.1/nfs/ubuntu-daily-x64/casper/initrd APPEND nfsroot=192.168.0.1:/srv/nfs/ubuntu-daily-x64 ro netboot=nfs file=/cdrom/preseed/ubuntu.seed boot=casper -- debian-installer/language=de console-setup/layoutcode=de keyboard-configuration/layoutcode=de keyboard-configuration/variant=German TEXT HELP Boot to Ubuntu x64 Daily-Live User: ubuntu ENDTEXT ######################################## LABEL ubuntu-x64 MENU LABEL Ubuntu x64 KERNEL http://192.168.0.1/nfs/ubuntu-x64/casper/vmlinuz INITRD http://192.168.0.1/nfs/ubuntu-x64/casper/initrd APPEND nfsroot=192.168.0.1:/srv/nfs/ubuntu-x64 ro netboot=nfs file=/cdrom/preseed/ubuntu.seed boot=casper systemd.mask=tmp.mount -- debian-installer/language=de console-setup/layoutcode=de keyboard-configuration/layoutcode=de keyboard-configuration/variant=German TEXT HELP Boot to Ubuntu x64 Live User: ubuntu ENDTEXT ######################################## LABEL ubuntu-lts-x64 MENU LABEL Ubuntu LTS x64 KERNEL http://192.168.0.1/nfs/ubuntu-lts-x64/casper/vmlinuz INITRD http://192.168.0.1/nfs/ubuntu-lts-x64/casper/initrd APPEND nfsroot=192.168.0.1:/srv/nfs/ubuntu-lts-x64 ro netboot=nfs file=/cdrom/preseed/ubuntu.seed boot=casper systemd.mask=tmp.mount -- debian-installer/language=de console-setup/layoutcode=de keyboard-configuration/layoutcode=de keyboard-configuration/variant=German TEXT HELP Boot to Ubuntu LTS x64 Live User: ubuntu ENDTEXT -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1765765 Title: on nfsboot 18.04 bionic, internet addresses arn't resolve properly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1765765/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs