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fix(dhcpcd): add missing hostname and ntp_servers directives #331

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Merged
volumio merged 1 commit into from
Dec 18, 2025
Merged

fix(dhcpcd): add missing hostname and ntp_servers directives #331

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90 changes: 3 additions & 87 deletions volumio/etc/dhcpcd.conf
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Original file line number Diff line number Diff line change
@@ -1,98 +1,14 @@
#===================================================================
# Volumio DHCP Client Daemon Configuration
# Maintainer: Just a Nerd
# Version: 1.0
# Date: 2025-11-14
#
# This configuration manages DHCP client behavior for Volumio's
# network interfaces (eth0, wlan0). Settings are optimized for
# embedded audio streaming systems with wireless networking.
#
# For detailed option descriptions, see: dhcpcd.conf(5)
#===================================================================

#===================================================================
# INTERFACE MANAGEMENT
#===================================================================

# Restrict dhcpcd to ethernet and WiFi interfaces only
# Prevents dhcpcd from managing other network devices
allowinterfaces eth0 wlan0

#===================================================================
# CLIENT IDENTIFICATION
#===================================================================

# Use DHCP Unique Identifier (DUID) + Interface Association ID (IAID)
# per RFC4361 for consistent client identification across reboots
# Note: Some non-compliant DHCP servers may not support this
hostname
duid

# Blank vendor class identifier to avoid advertising system details
# Default would send: dhcpcd-<version>:<os>:<machine>:<platform>
vendorclassid

#===================================================================
# LEASE PERSISTENCE
#===================================================================

# Keep interface configuration active when dhcpcd exits
# Prevents network disruption during dhcpcd service restarts
persistent

#===================================================================
# DHCP OPTIONS
#===================================================================

# Request DNS and domain information from DHCP server
option domain_name_servers, domain_name, domain_search

# Request classless static routes (RFC 3442)
# Allows DHCP server to provide custom routing information
option domain_name_servers, domain_name, domain_search, host_name
option classless_static_routes

# Respect network MTU settings from DHCP server
# Applied to DHCP-configured routes
option interface_mtu

# Request hostname assignment from DHCP server
option host_name

# Enable rapid commit (RFC 4039)
# Reduces DHCP handshake from 4 to 2 messages when server supports it
# Safe to enable - only activates if server also supports it
option rapid_commit

#===================================================================
# DHCP PROTOCOL REQUIREMENTS
#===================================================================

# Require DHCP server identifier in responses per RFC 2131
# Ensures we know which DHCP server provided the lease
option ntp_servers
require dhcp_server_identifier

#===================================================================
# IPv6 CONFIGURATION
#===================================================================

# Use stable private IPv6 addresses based on DUID
# Provides privacy while maintaining address stability
# Alternative: 'slaac hwaddr' uses hardware address (less private)
slaac private

#===================================================================
# IPv4 LINK-LOCAL DISABLE
#===================================================================

# Disable IPv4 link-local address assignment (169.254.x.x)
# Volumio relies on proper DHCP or static configuration
# Link-local addresses can cause confusion in audio streaming
noipv4ll

#===================================================================
# HOSTNAME RESOLUTION
#===================================================================

# Disable hostname lookups via hook scripts
# Reduces unnecessary DNS queries and startup delays
nohook lookup-hostname