problem with networking on Xen

[bchalios]

I am trying to run the apache server from rumprun-packages.

I have built it and baked it according to the README but when trying to launch the unikernel on Xen I get the following error:

root@local:/home/bchalios/rumprun-packages/apache2# rumprun xen -i -I xen0,xenif -W xen0,inet,static,10.0.120.120/24 -b images/data.iso,/data bin/httpd_xen_pv.bin -k start -DONE_PROCESS

!!!
!!! NOTE: rumprun is experimental. syntax may change in the future
!!!

Parsing config from /tmp/rumprun.ONbwkksb/xr.conf
unrecognized argument `xenif'
libxl: error: libxl_exec.c:118:libxl_report_child_exitstatus: /etc/xen/scripts/vif-bridge online [30018] exited with error status 1
libxl: error: libxl_device.c:1286:device_hotplug_child_death_cb: script: Could not find bridge device xenbr0
libxl: error: libxl_create.c:1519:domcreate_attach_devices: Domain 138:unable to add vif devices
libxl: error: libxl_exec.c:118:libxl_report_child_exitstatus: /etc/xen/scripts/vif-bridge offline [30080] exited with error status 1
libxl: error: libxl_device.c:1286:device_hotplug_child_death_cb: script: Could not find bridge device xenbr0
libxl: error: libxl_domain.c:1034:libxl__destroy_domid: Domain 138:Non-existant domain
libxl: error: libxl_domain.c:993:domain_destroy_callback: Domain 138:Unable to destroy guest
libxl: error: libxl_domain.c:920:domain_destroy_cb: Domain 138:Destruction of domain failed
rumprun: error: xl create failed

[speas038]

This seems to be caused by you not having your xen bridge device enabled, your /etc/network/interfaces file should look something like this for xen guests to have networking enabled

iface eth0 inet manual

iface xenbr0 inet dhcp
	bridge_ports eth0

reference: https://wiki.xenproject.org/wiki/Network_Configuration_Examples_(Xen_4.1%2B)