Hi.

Sat Apr 30 22:33:31 2022 daemon.info dnsmasq[1637]: compile time options: IPv6 GNU-getopt no-DBus no-i18n no-IDN DHCP no-DHCPv6 no-Lua TFTP no-conntrack no-ipset no-auth no-DNSSEC no-ID loop-detect inotify
Sat Apr 30 22:33:31 2022 daemon.info dnsmasq[1637]: using local addresses only for domain lan
Sat Apr 30 22:33:31 2022 daemon.info dnsmasq[1637]: reading /tmp/resolv.conf.auto
Sat Apr 30 22:33:31 2022 daemon.info dnsmasq[1637]: using local addresses only for domain lan

1º Try to put static address and see if resolve names inside console

- Using putty to machine try ping for example v2.eu.stratum.slushpool.com 
         

2º Are you usind boot from SD or from nand? If you are using nand start i see bad block ( you can try reinstall again or run from SD to see if is nand problem)

Sat Apr 30 23:52:11 2022 kern.info kernel: [    1.396461] Bad block table found at page 131008, version 0x01
Sat Apr 30 23:52:11 2022 kern.info kernel: [    1.402632] Bad block table found at page 130944, version 0x01

Must do individualy each one direct to pc and configure with Ebit tool.(Sorry for my bad english).
http://mall.ebang.com.cn/upload/miner/cms/EBIT%20Miner%20Network%20Operation.pdf