Well this message is timely.
2 days ago I swapped my usual Protectli box with a Lenovo M700 tiny to which I had added an m.2 i226 based ethernet port. Just checked firmware as per your message and mine has v2.17 firmware as well (see below).
[1] igc0: <Intel(R) Ethernet Controller I226-V> mem 0xdf100000-0xdf1fffff,0xdf200000-0xdf203fff irq 18 at device 0.0 on pci1
[1] igc0: EEPROM V2.17-0 eTrack 0x80000303
As it's working fine, I'm kinda reluctant to roll the dice on flashing new firmware.
2 days ago I swapped my usual Protectli box with a Lenovo M700 tiny to which I had added an m.2 i226 based ethernet port. Just checked firmware as per your message and mine has v2.17 firmware as well (see below).
[1] igc0: <Intel(R) Ethernet Controller I226-V> mem 0xdf100000-0xdf1fffff,0xdf200000-0xdf203fff irq 18 at device 0.0 on pci1
[1] igc0: EEPROM V2.17-0 eTrack 0x80000303
As it's working fine, I'm kinda reluctant to roll the dice on flashing new firmware.