I am running an android emulator on Linux, using the Android Sdk.
The emulator does not seem to have network connection. I do not see any sign of it either inside or in the host.
What could be the cause, how a healthy routing setup looks like, and how can I fix it?
Routing on the host (no matter the emulator is running or not). I miss a virtual device for the emulator and associated routing.
$ ip route show
default via 192.168.1.1 dev wlp1s0 proto dhcp src 192.168.1.65 metric 600
169.254.0.0/16 dev wlp1s0 scope link metric 1000
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
192.168.1.0/24 dev wlp1s0 proto kernel scope link src 192.168.1.65 metric 600
Routing in the emulator. I miss some default route here.
10.0.0.0/8 dev eth0 proto kernel scope link src 10.0.2.15
10.0.2.0/24 dev wlan0 proto kernel scope link src 10.0.2.16
The qemu options of the emulator (s/ /\\\r / for ease of readability).
Note that there are some android emulator specific options here.
/opt/Android/Sdk/emulator/qemu/linux-x86_64/qemu-system-x86_64\
-dns-server\
192.168.1.1,2001:4c48:1::1\
-mem-path\
/home/mag/.android/avd/testAVD.avd/snapshots/default_boot/ram.img\
-mem-file-shared\
-serial\
null\
-device\
goldfish_pstore,addr=0xff018000,size=0x10000,file=/home/mag/.android/avd/testAVD.avd/data/misc/pstore/pstore.bin\
-cpu\
android64\
-enable-kvm\
-smp\
cores=2\
-m\
2048\
-lcd-density\
160\
-object\
iothread,id=disk-iothread\
-nodefaults\
-kernel\
/opt/Android/Sdk/system-images/android-33/google_apis/x86_64//kernel-ranchu\
-initrd\
/home/mag/.android/avd/testAVD.avd/initrd\
-drive\
if=none,index=0,id=system,if=none,file=/opt/Android/Sdk/system-images/android-33/google_apis/x86_64//system.img,read-only\
-device\
virtio-blk-pci,drive=system,iothread=disk-iothread,modern-pio-notify\
-drive\
if=none,index=1,id=cache,if=none,file=/home/mag/.android/avd/testAVD.avd/cache.img.qcow2,overlap-check=none,cache=unsafe,l2-cache-size=1048576\
-device\
virtio-blk-pci,drive=cache,iothread=disk-iothread,modern-pio-notify\
-drive\
if=none,index=2,id=userdata,if=none,file=/home/mag/.android/avd/testAVD.avd/userdata-qemu.img.qcow2,overlap-check=none,cache=unsafe,l2-cache-size=1048576\
-device\
virtio-blk-pci,drive=userdata,iothread=disk-iothread,modern-pio-notify\
-drive\
if=none,index=3,id=encrypt,if=none,file=/home/mag/.android/avd/testAVD.avd/encryptionkey.img.qcow2,overlap-check=none,cache=unsafe,l2-cache-size=1048576\
-device\
virtio-blk-pci,drive=encrypt,iothread=disk-iothread,modern-pio-notify\
-drive\
if=none,index=4,id=vendor,if=none,file=/opt/Android/Sdk/system-images/android-33/google_apis/x86_64//vendor.img,read-only\
-device\
virtio-blk-pci,drive=vendor,iothread=disk-iothread,modern-pio-notify\
-drive\
if=none,index=1,id=cache,if=none,file=/home/mag/.android/avd/testAVD.avd/cache.img.qcow2,overlap-check=none,cache=unsafe,l2-cache-size=1048576\
-device\
virtio-blk-pci,drive=cache,iothread=disk-iothread,modern-pio-notify\
-drive\
if=none,index=2,id=userdata,if=none,file=/home/mag/.android/avd/testAVD.avd/userdata-qemu.img.qcow2,overlap-check=none,cache=unsafe,l2-cache-size=1048576\
-device\
virtio-blk-pci,drive=userdata,iothread=disk-iothread,modern-pio-notify\
-drive\
if=none,index=3,id=encrypt,if=none,file=/home/mag/.android/avd/testAVD.avd/encryptionkey.img.qcow2,overlap-check=none,cache=unsafe,l2-cache-size=1048576\
-device\
virtio-blk-pci,drive=encrypt,iothread=disk-iothread,modern-pio-notify\
-drive\
if=none,index=4,id=vendor,if=none,file=/opt/Android/Sdk/system-images/android-33/google_apis/x86_64//vendor.img,read-only\
-device\
virtio-blk-pci,drive=vendor,iothread=disk-iothread,modern-pio-notify\
-netdev\
user,id=mynet\
-device\
virtio-net-pci,netdev=mynet\
-chardev\
null,id=forhvc0\
-chardev\
null,id=forhvc1\
-device\
virtio-serial-pci,ioeventfd=off\
-device\
virtconsole,chardev=forhvc0\
-device\
virtconsole,chardev=forhvc1\
-chardev\
rootcanal,id=rootcanal\
-device\
virtserialport,chardev=rootcanal,name=bluetooth\
-device\
virt
