UserAgent: Mozilla/5.0 (X11; CrOS x86_64 10820.0.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3473.0 Safari/537.36
Platform: 10820.0.0 (Official Build) dev-channel eve

Steps to reproduce the problem:
1. docker swarm init --advertise-addr eth0
2. docker stack <DESIRED_STACK>
3. docker service ps --no-trunc <DESIRED_SERVICE>

What is the expected behavior?
Service is running.

What went wrong?
Service is shutdown. Error message is the following : "starting container failed: subnet sandbox join failed for "10.0.0.0/24": error creating vxlan interface: operation not supported"

Did this work before? N/A 

Chrome version: 69.0.3473.0  Channel: dev
OS Version: 10820.0.0
Flash Version: 

Looking into the error message, issue seems to be kernel-related. As Crostini is running Termina, I'm unsure what the resolution of the fix should be. For other kernels, the solution was to ensure CONFIG_IPVLAN and CONFIG_VXLAN were not missing.

The following script was provided to check if the system had everything needed : https://raw.githubusercontent.com/docker/docker/master/contrib/check-config.sh

Here is my system's output :

./check-config.sh 
info: reading kernel config from /proc/config.gz ...

Generally Necessary:
- cgroup hierarchy: properly mounted [/sys/fs/cgroup]
- CONFIG_NAMESPACES: enabled
- CONFIG_NET_NS: enabled
- CONFIG_PID_NS: enabled
- CONFIG_IPC_NS: enabled
- CONFIG_UTS_NS: enabled
- CONFIG_CGROUPS: enabled
- CONFIG_CGROUP_CPUACCT: enabled
- CONFIG_CGROUP_DEVICE: enabled
- CONFIG_CGROUP_FREEZER: enabled
- CONFIG_CGROUP_SCHED: enabled
- CONFIG_CPUSETS: enabled
- CONFIG_MEMCG: enabled
- CONFIG_KEYS: enabled
- CONFIG_VETH: enabled
- CONFIG_BRIDGE: enabled
- CONFIG_BRIDGE_NETFILTER: enabled
- CONFIG_NF_NAT_IPV4: enabled
- CONFIG_IP_NF_FILTER: enabled
- CONFIG_IP_NF_TARGET_MASQUERADE: enabled
- CONFIG_NETFILTER_XT_MATCH_ADDRTYPE: enabled
- CONFIG_NETFILTER_XT_MATCH_CONNTRACK: enabled
- CONFIG_NETFILTER_XT_MATCH_IPVS: missing
- CONFIG_IP_NF_NAT: enabled
- CONFIG_NF_NAT: enabled
- CONFIG_NF_NAT_NEEDED: enabled
- CONFIG_POSIX_MQUEUE: enabled

Optional Features:
- CONFIG_USER_NS: enabled
- CONFIG_SECCOMP: enabled
- CONFIG_CGROUP_PIDS: enabled
- CONFIG_MEMCG_SWAP: missing
- CONFIG_MEMCG_SWAP_ENABLED: missing
- CONFIG_LEGACY_VSYSCALL_EMULATE: enabled
- CONFIG_BLK_CGROUP: enabled
- CONFIG_BLK_DEV_THROTTLING: enabled
- CONFIG_IOSCHED_CFQ: enabled
- CONFIG_CFQ_GROUP_IOSCHED: enabled
- CONFIG_CGROUP_PERF: missing
- CONFIG_CGROUP_HUGETLB: missing
- CONFIG_NET_CLS_CGROUP: missing
- CONFIG_CGROUP_NET_PRIO: missing
- CONFIG_CFS_BANDWIDTH: enabled
- CONFIG_FAIR_GROUP_SCHED: enabled
- CONFIG_RT_GROUP_SCHED: enabled
- CONFIG_IP_VS: enabled
- CONFIG_IP_VS_NFCT: enabled
- CONFIG_IP_VS_RR: missing
- CONFIG_EXT4_FS: enabled
- CONFIG_EXT4_FS_POSIX_ACL: enabled
- CONFIG_EXT4_FS_SECURITY: enabled
- Network Drivers:
  - "overlay":
    - CONFIG_VXLAN: missing
      Optional (for encrypted networks):
      - CONFIG_CRYPTO: enabled
      - CONFIG_CRYPTO_AEAD: enabled
      - CONFIG_CRYPTO_GCM: missing
      - CONFIG_CRYPTO_SEQIV: enabled
      - CONFIG_CRYPTO_GHASH: missing
      - CONFIG_XFRM: enabled
      - CONFIG_XFRM_USER: enabled
      - CONFIG_XFRM_ALGO: enabled
      - CONFIG_INET_ESP: missing
      - CONFIG_INET_XFRM_MODE_TRANSPORT: missing
  - "ipvlan":
    - CONFIG_IPVLAN: missing
  - "macvlan":
    - CONFIG_MACVLAN: enabled
    - CONFIG_DUMMY: missing
  - "ftp,tftp client in container":
    - CONFIG_NF_NAT_FTP: enabled
    - CONFIG_NF_CONNTRACK_FTP: enabled
    - CONFIG_NF_NAT_TFTP: enabled
    - CONFIG_NF_CONNTRACK_TFTP: enabled
- Storage Drivers:
  - "aufs":
    - CONFIG_AUFS_FS: missing
  - "btrfs":
    - CONFIG_BTRFS_FS: enabled
    - CONFIG_BTRFS_FS_POSIX_ACL: missing
  - "devicemapper":
    - CONFIG_BLK_DEV_DM: enabled
    - CONFIG_DM_THIN_PROVISIONING: enabled
  - "overlay":
    - CONFIG_OVERLAY_FS: missing
  - "zfs":
    - /dev/zfs: missing
    - zfs command: missing
    - zpool command: missing

Limits:
- /proc/sys/kernel/keys/root_maxkeys: 1000000

And filtering by the desired configs :

./check-config.sh | grep -e CONFIG_IPVLAN -e CONFIG_VXLAN
    - CONFIG_VXLAN: missing
    - CONFIG_IPVLAN: missing

Lastly, here are my error logs from Docker :

docker service ps --no-trunc func_alertmanager
ID                          NAME                      IMAGE                                                                                                    NODE                DESIRED STATE       CURRENT STATE          ERROR                                                                                                                                PORTS
fkapie0f2uhxaacu2kcs9aftm   func_alertmanager.1       prom/alertmanager:v0.15.0-rc.0@sha256:db97c29cac1a94133a3cd20df995fd7a6193173183932994c24c7253e5f0cb5d   penguin             Ready               Ready 2 seconds ago                                                                                                                                         
ykxvxvwng78zhltql2fmp2pko    \_ func_alertmanager.1   prom/alertmanager:v0.15.0-rc.0@sha256:db97c29cac1a94133a3cd20df995fd7a6193173183932994c24c7253e5f0cb5d   penguin             Shutdown            Failed 2 minutes ago   "starting container failed: subnet sandbox join failed for "10.0.0.0/24": error creating vxlan interface: operation not supported"   
yl1qom87yu5qvy2f257mifp41    \_ func_alertmanager.1   prom/alertmanager:v0.15.0-rc.0@sha256:db97c29cac1a94133a3cd20df995fd7a6193173183932994c24c7253e5f0cb5d   penguin             Shutdown            Failed 4 minutes ago   "starting container failed: subnet sandbox join failed for "10.0.0.0/24": error creating vxlan interface: operation not supported"   
zkd9dnpnp0ki5m4pbrewnhqho    \_ func_alertmanager.1   prom/alertmanager:v0.15.0-rc.0@sha256:db97c29cac1a94133a3cd20df995fd7a6193173183932994c24c7253e5f0cb5d   penguin             Shutdown            Failed 5 minutes ago   "starting container failed: subnet sandbox join failed for "10.0.0.0/24": error creating vxlan interface: operation not supported"   
yk51ahjbavzj35pk8dnm9twbl    \_ func_alertmanager.1   prom/alertmanager:v0.15.0-rc.0@sha256:db97c29cac1a94133a3cd20df995fd7a6193173183932994c24c7253e5f0cb5d   penguin             Shutdown            Failed 6 minutes ago   "starting container failed: subnet sandbox join failed for "10.0.0.0/24": error creating vxlan interface: operation not supported"