Will --add-host cover the /etc/hosts inheritied from host when using --network=host ?

Description

docker run -d --name ${module} --restart always \
          -v /ava_app/${caCN}/ava-${caCN}-service-${module}:/ava_app/prod/app \
          -v /ava_data/upload:/ava_data/upload \
          -v /ava_data/logs:/ava_data/logs \
          -v /ava_data/ftp:/ava_data/ftp \
          -v /etc/localtime:/etc/localtime:ro \
          -v /ava_app/timezone:/etc/timezone:ro \
          --add-host fdfs.ava.com.cn:${localIP} \
          --add-host dev.ava.com.cn:${localIP} \
          --add-host redis.ava.com.cn:${localIP} \
          --add-host db.ava.com.cn:${caMysqlHost} \
          --add-host mq.ava.com.cn:${localIP} \
          --add-host eureka8761:${localIP} \
          --add-host eureka8861:${localIP} \
          --add-host eureka8961:${localIP} \
          --network=host ava/java:8

This is my command to create a container. I use --network=host, then the /etc/hosts in container is the same to the file in host:

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
127.0.0.1   ava.app
192.168.35.204 gx.ava.com.cn

But after I add the --add-host then the /etc/hosts in container like this:

127.0.0.1       localhost
::1     localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
192.168.37.156  fdfs.ava.com.cn
192.168.37.156  dev.ava.com.cn
192.168.37.156  redis.ava.com.cn
192.168.37.156  db.ava.com.cn
192.168.37.156  mq.ava.com.cn
192.168.37.156  eureka8761
192.168.37.156  eureka8861
192.168.37.156  eureka8961

Reproduce

docker run -d --name ${module} --restart always \
          -v /ava_app/${caCN}/ava-${caCN}-service-${module}:/ava_app/prod/app \
          -v /ava_data/upload:/ava_data/upload \
          -v /ava_data/logs:/ava_data/logs \
          -v /ava_data/ftp:/ava_data/ftp \
          -v /etc/localtime:/etc/localtime:ro \
          -v /ava_app/timezone:/etc/timezone:ro \
          --add-host fdfs.ava.com.cn:${localIP} \
          --add-host dev.ava.com.cn:${localIP} \
          --add-host redis.ava.com.cn:${localIP} \
          --add-host db.ava.com.cn:${caMysqlHost} \
          --add-host mq.ava.com.cn:${localIP} \
          --add-host eureka8761:${localIP} \
          --add-host eureka8861:${localIP} \
          --add-host eureka8961:${localIP} \
          --network=host ava/java:8

docker exec -it live bash cat /etc/hosts

Expected behavior

No response

docker version

Client: Docker Engine - Community
 Version:           20.10.8
 API version:       1.41
 Go version:        go1.16.6
 Git commit:        3967b7d
 Built:             Fri Jul 30 19:55:49 2021
 OS/Arch:           linux/amd64
 Context:           default
 Experimental:      true

Server: Docker Engine - Community
 Engine:
  Version:          20.10.8
  API version:      1.41 (minimum version 1.12)
  Go version:       go1.16.6
  Git commit:       75249d8
  Built:            Fri Jul 30 19:54:13 2021
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.4.9
  GitCommit:        e25210fe30a0a703442421b0f60afac609f950a3
 runc:
  Version:          1.0.1
  GitCommit:        v1.0.1-0-g4144b63
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0

docker info

Client:
 Context:    default
 Debug Mode: false
 Plugins:
  app: Docker App (Docker Inc., v0.9.1-beta3)
  buildx: Build with BuildKit (Docker Inc., v0.6.1-docker)
  scan: Docker Scan (Docker Inc., v0.8.0)

Server:
 Containers: 18
  Running: 17
  Paused: 0
  Stopped: 1
 Images: 7
 Server Version: 20.10.8
 Storage Driver: overlay2
  Backing Filesystem: xfs
  Supports d_type: true
  Native Overlay Diff: true
  userxattr: false
 Logging Driver: json-file
 Cgroup Driver: cgroupfs
 Cgroup Version: 1
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: io.containerd.runc.v2 io.containerd.runtime.v1.linux runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: e25210fe30a0a703442421b0f60afac609f950a3
 runc version: v1.0.1-0-g4144b63
 init version: de40ad0
 Security Options:
  seccomp
   Profile: default
 Kernel Version: 3.10.0-1160.el7.x86_64
 Operating System: CentOS Linux 7 (Core)
 OSType: linux
 Architecture: x86_64
 CPUs: 8
 Total Memory: 15.51GiB
 Name: ava.app
 ID: J2JF:F6KR:JUCY:JPDC:RYIK:2MZ3:JFL4:JEUK:QPKS:RMG3:FC7R:THXJ
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 Registry: https://index.docker.io/v1/
 Labels:
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Live Restore Enabled: false

WARNING: IPv4 forwarding is disabled
WARNING: bridge-nf-call-iptables is disabled
WARNING: bridge-nf-call-ip6tables is disabled
You have mail in /var/spool/mail/root

Additional Info