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net: add DHCP Option 121 (Classless Static Routes) support #2123

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net: add DHCP Option 121 (Classless Static Routes) support #2123

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6b83cf5
net: add DHCP Option 121 (Classless Static Routes) support
Jan 2, 2026
f515609
Merge branch 'nanovms:master' into dhcp-option121
tpjg Jan 4, 2026
781dd53
net: move DHCP Option 121 implementation into lwip
Mar 20, 2026
6374538
Merge branch 'nanovms:master' into dhcp-option121
tpjg Mar 20, 2026
8d128e0
net: remove LWIP_HOOK_IP4_ROUTE_SRC, now wired directly in lwip
Mar 20, 2026
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2 changes: 1 addition & 1 deletion Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -54,7 +54,7 @@ endif
THIRD_PARTY= $(ACPICA_DIR)/.vendored $(LWIPDIR)/.vendored $(MBEDTLS_DIR)/.vendored

$(ACPICA_DIR)/.vendored: GITFLAGS= --depth 1 https://github.com/acpica/acpica.git -b R09_30_21
$(LWIPDIR)/.vendored: GITFLAGS= --depth 1 https://github.com/nanovms/lwip.git -b STABLE-2_1_x
$(LWIPDIR)/.vendored: GITFLAGS= --depth 1 https://github.com/tpjg/lwip.git -b STABLE-2_1_x
$(MBEDTLS_DIR)/.vendored: GITFLAGS= --depth 1 https://github.com/nanovms/mbedtls.git

kernel: $(THIRD_PARTY) contgen
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2 changes: 2 additions & 0 deletions platform/pc/Makefile
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Expand Up @@ -149,6 +149,8 @@ SRCS-lwip= \
$(LWIPDIR)/src/core/ipv4/ip4_addr.c \
$(LWIPDIR)/src/core/ipv4/ip4_frag.c \
$(LWIPDIR)/src/core/ipv4/ip4.c \
$(LWIPDIR)/src/core/ipv4/ip4_route_table.c \
$(LWIPDIR)/src/core/ipv4/dhcp_classless_route.c \
$(LWIPDIR)/src/core/ipv6/dhcp6.c \
$(LWIPDIR)/src/core/ipv6/ethip6.c \
$(LWIPDIR)/src/core/ipv6/icmp6.c \
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2 changes: 2 additions & 0 deletions platform/riscv-virt/Makefile
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Expand Up @@ -108,6 +108,8 @@ SRCS-lwip= \
$(LWIPDIR)/src/core/ipv4/ip4_addr.c \
$(LWIPDIR)/src/core/ipv4/ip4_frag.c \
$(LWIPDIR)/src/core/ipv4/ip4.c \
$(LWIPDIR)/src/core/ipv4/ip4_route_table.c \
$(LWIPDIR)/src/core/ipv4/dhcp_classless_route.c \
$(LWIPDIR)/src/core/ipv6/dhcp6.c \
$(LWIPDIR)/src/core/ipv6/ethip6.c \
$(LWIPDIR)/src/core/ipv6/icmp6.c \
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2 changes: 2 additions & 0 deletions platform/virt/Makefile
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Expand Up @@ -136,6 +136,8 @@ SRCS-lwip= \
$(LWIPDIR)/src/core/ipv4/ip4_addr.c \
$(LWIPDIR)/src/core/ipv4/ip4_frag.c \
$(LWIPDIR)/src/core/ipv4/ip4.c \
$(LWIPDIR)/src/core/ipv4/ip4_route_table.c \
$(LWIPDIR)/src/core/ipv4/dhcp_classless_route.c \
$(LWIPDIR)/src/core/ipv6/dhcp6.c \
$(LWIPDIR)/src/core/ipv6/ethip6.c \
$(LWIPDIR)/src/core/ipv6/icmp6.c \
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2 changes: 2 additions & 0 deletions src/net/lwipopts.h
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Expand Up @@ -198,3 +198,5 @@ static inline int net_ip_input_hook(struct pbuf *pbuf, struct netif *input_netif
return 1;
return 0;
}

#define LWIP_DHCP_CLASSLESS_STATIC_ROUTES 1