-When you deploy a virtual machine (VM), Azure creates several [system default routes](/articles/virtual-network/virtual-networks-udr-overview.md#system-routes?toc=%2Fazure%2Fnetwork-watcher%2Ftoc.json&tabs=json) for it. You can create [custom routes](/articles/virtual-network/virtual-networks-udr-overview.md#custom-routes?toc=%2Fazure%2Fnetwork-watcher%2Ftoc.json&tabs=json) to override some of Azure's system routes. Sometimes, a custom route can result in a VM not being able to communicate with the intended destination. You can use Azure Network Watcher [next hop](network-watcher-next-hop-overview.md) capability to troubleshoot and diagnose the VM routing problem that's preventing it from correctly communicating with other resources.
0 commit comments