Symptom
When configuring a network statement "network 0.0.0.0" in EIGRP configuration, if we remove this statement and reload the router after saving, this statement automatically re-appears. It can be removed the usual way by configuring a "no" statement, but after saving the configuration and rebooting the device the statement reappears in the EIGRP section.
Conditions
After configuring a network statement "network 0.0.0.0" in EIGRP configuration, remove this statement using "no", save the configuration and reload the router.
Further Problem Description
Also the issue is not happening when configuring it with the simple eigrp configuration where network is configured directly under eigrp statement, but we can recreate it using an address family for a VRF in the EIGRP configuration.