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networking - Default route being added randomly while NIC is already up, post-up action doesn't help - Ask Ubuntu
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Amazon.com: FriendlyElec Nanopi R5S Mini Router OpenWRT with Three Gbps Ethernet Ports LPDDR4X 4GB RAM Based in RK3568 Soc for IOT NAS Smart Home Gateway Support Linux Ubuntu (with CNC Metal Case) :
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Industrial Control Router Firewall 5LAN2COM i225 i226 2.5 Gigabit N5095 N5105 IoT Linux Wndows10 Centos Ubuntu POE G47| | - AliExpress
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Qotom-Q555G6-S05 Qotom Mini PC Core i5 7200U Server 6 Intel NIC AES-NI Dual Core Support Linux Ubuntu Gateway Firewall Router Fanless Mini Computer (8G DDR4 RAM + 256G MSATA SSD): Minis: Amazon.com.au
![linux - Configure router/gateway on Ubuntu issue: unable to reach hosts behind ISPs gateway (network map provided) - Server Fault linux - Configure router/gateway on Ubuntu issue: unable to reach hosts behind ISPs gateway (network map provided) - Server Fault](https://i.stack.imgur.com/h2HYi.png)